Risk level reflects replacement-parts supply exposure for vehicles sold in Canada, based on assembly location, feedstock dependence, and confirmed upstream disruption. Tier definitions and model-level detail available on the Overview page.
| OEM Group | Risk Level | Primary Driver | Highest-Exposure Models (Canada) | Lower-Exposure Models (Canada) |
|---|---|---|---|---|
| Hyundai | High | 77% Gulf naphtha. 4 of 5 Korean resin producers in force majeure. | Kona EV, IONIQ 6 — Canada-only, no U.S. parts fallback | Tucson, Santa Fe, IONIQ 5 — NA-assembled, Mobis AL/GA bumpers |
| Kia | High | Same as Hyundai. 4 Canada-only models. | EV3, EV4, EV5, Niro PHEV — Canada-only, no U.S. parts fallback | Sportage, Forte — NA-assembled |
| Genesis | Elevated | 100% Korea-assembled. Parts in both markets. | GV70, GV80, G70, G80, G90 — all Korea-built | — |
| Subaru | High | 100% Japan-assembled for Canadian market. No NA fallback. | Forester, Outback, Crosstrek, WRX, BRZ, Solterra — all Japan | — |
| Mazda | High | Most models Japan-assembled. Japanese production cuts confirmed. | CX-5, CX-30, CX-70, CX-90, Mazda3, MX-5 — Japan | CX-50 — Alabama JV |
| Mitsubishi | Elevated | Japan-assembled. Smaller Canadian fleet. | Outlander PHEV, Eclipse Cross, RVR — Japan | — |
| Toyota / Lexus | Lower | Canadian assembly (Cambridge, ON). Japan-sourced lamps/ADAS remain watch items. | Japan-built Lexus sedans, specialty models | RAV4, Corolla, Lexus RX — Canada-assembled |
| Honda / Acura | Lower | Canadian assembly (Alliston, ON). Same watch items as Toyota. | Japan-built Acura sedans, specialty models | Civic, CR-V — Canada-assembled |
| Nissan | Mixed | High-volume NA-assembled; specialty models Japan-dependent. | ARIYA, Z, LEAF — Japan | Rogue, Pathfinder, Kicks — NA-assembled |
| BMW | Mixed | Cost surge, not supply cessation. SUVs NA-assembled; sedans European. | 3 Series, 5 Series, 7 Series, i4, iX — Europe | X3, X5, X6, X7 — Spartanburg, SC |
| Mercedes-Benz | Mixed | Same as BMW. GLC is highest-volume Tier 1 model. | C-Class, E-Class, S-Class, GLC — Europe | GLE, GLS — Tuscaloosa, AL |
| VW | Lower | High-volume models NA/Mexico-assembled. | Golf, ID.4 — Europe | Atlas, Tiguan, Jetta, Taos — Chattanooga / Puebla |
| Audi | Mixed | Q5 Mexico-assembled. Sedans and other SUVs European. | A5, A6, Q7, Q8, e-tron — Europe | Q5 — San José Chiapa, MX |
| Porsche | High | 100% European-assembled. No NA production. | 911, Cayenne, Macan, Taycan, Panamera — all Europe | — |
| MINI | High | 100% European-assembled. | Cooper, Countryman — Oxford / Leipzig | — |
| Ford | Lower | NGL-based feedstock. NA-assembled. Aluminium exposure on F-150. | — | F-150, Escape, Bronco, Explorer — NA plants |
| GM | Lower | NGL-based feedstock. NA-assembled. | — | Sierra, Equinox, Blazer — NA plants incl. Oshawa |
| Stellantis | Lower | Core brands NA-assembled. Italian brands are the exception. | Alfa Romeo Stelvio/Giulia/Tonale, Fiat 500e — Europe | RAM, Jeep, Dodge, Chrysler — NA plants incl. Windsor/Brampton |
| Tesla | Mixed | Fremont/Austin models insulated. Shanghai Model 3 variants exposed. | Model 3 (Shanghai variants) | Model Y, Model S, Model X — Fremont / Austin |
Assembly location is a reasonable exposure proxy but is not proof of replacement-parts sourcing. Lamps, ADAS sensors, and electronic modules may be imported regardless of assembly location. Risk level reflects plastics/petrochemical exposure; aluminium and paint exposure is cross-cutting (see Non-Plastics).
Estimated probability that the current upstream petrochemical disruption transmits into material Canadian collision-repair parts availability or cost pressure within 90 days, for highest-exposure models (Korean third-party-manufactured lamps, trim, weather strips for Hyundai/Kia; Japan-sourced Subaru/Mazda parts). Derived from six-node conditional probability chain. Each node is a required transmission step; all must occur for Canadian claims impact to materialize.
| Node | Condition | Basis | Type | Evidence | Prob. |
|---|---|---|---|---|---|
| 1 | Strait remains closed 4+ more weeks | Day 72 of closure. Project Freedom paused May 6 after 2 vessels transited. Trump rejected Iran counteroffer May 11 ("totally unacceptable"); 4th round of talks in Oman same day. HMM Namu (Korean vessel) confirmed struck by unidentified aerial objects — 26 Korean ships stranded. Diplomacy deteriorating; no near-term reopening pathway. | Forecast | Medium | 90–95% |
| 2 | Asian crackers remain at reduced rates through June | YNCC, LG Chem, Hanwha, Formosa all in declared force majeure. ICIS: 57% NE Asia cracker utilization forecast for May (from 83% pre-war → 63% Apr). Japan JPCA: record-low 68.6% cracker utilization in March, ethylene −38.8% YoY. Wanhua Chemical (China) FM on MDI/TDI. Shin-Etsu PVC cuts. Korean PE +200,000 won/ton with +800k signalled. Recycled plastic spot quadrupled to ~$1,600/ton globally. | Fact / Forecast | High / Med | 90–95% |
| 3 | Resin allocation reaches automotive-grade polymers | 71% of Korean plastics SMEs received supply-reduction notices (Korean Fed. Plastics Ind. Coops). FM declarations are total-output cuts, not grade-specific. No direct evidence yet of automotive-specific allocation or supplier notices. Mobis may secure informal allocation priority; third-party suppliers (SL Corp, Seoyon E-Hwa) lack this leverage. | Inference | Med / Low | 75–85% |
| 4 | Parts manufacturers experience production shortfalls | Conditional on Node 3. Smaller converters carry 2–4 weeks of resin inventory. Stocks procured pre-FM (before mid-March) approaching depletion. Mobis in-house inferred to have longer runway due to scale and contractual allocation priority — not confirmed. | Inference | Medium | 75–85% |
| 5 | Finished parts pipeline to NA depletes | Pipeline: Korean factory → logistics center → ocean freight (~4–6 wks via Cape of Good Hope) → Markham PDC → dealer. Estimated 8–14 weeks total buffer. Pre-FM parts still flowing. Gaps appear when April/May production (reduced volume) arrives as smaller shipments. | Inference | Medium | 60–75% |
| 6 | Canadian claims indicators move | Observable triggers: dealer ETA extensions on Tier 1 SKUs, Mobis allocation advisory or pricing bulletin, OEM-only authorization frequency, supplement stacking, rental-day increases. Low-volume SKUs (specific lamp assemblies, single-model weather strips) deplete first. | Forecast | Low / Med | 55–70% |
Mobis Parts Canada issues allocation advisory or pricing bulletin. Canadian dealer lamp/mirror ETAs extend before bumper ETAs (confirms third-party rationing thesis). NA PP allocation language appears in TPE or StoneX newsletters. Strait closure extends past week 15 with no diplomatic progress. Anjeon valve fire recovery slips past June.
Ceasefire holds and mine clearance begins. Korean crackers restore rates above 75%. Formosa Plastics lifts force majeure. Mobis confirms adequate finished-parts inventory through Q3. NA resin price increases plateau and export pull stabilizes. Toyota supplier June warnings prove manageable.
Estimated probability that the current upstream petrochemical disruption transmits into material Canadian collision-repair OEM parts availability or cost pressure within 180 days (through early November 2026). At this horizon, pipeline inventory buffers are fully consumed if upstream disruption persists, but resolution pathways become a meaningful factor. Calculated using scenario-weighted probability across three resolution trajectories rather than the sequential node chain used for the 90-day estimate.
| Scenario | Description | Type | Evidence | Scenario Prob. | Impact if Occurs |
|---|---|---|---|---|---|
| A — Strait remains closed | No reopening through November. Mine clearance not begun or incomplete. Pipeline buffers (8–14 weeks) fully consumed. Korean and Japanese crackers remain at reduced rates. NA export pull sustained. Trump rejected Iran counteroffer May 11. C&EN: industry expects "not normal for rest of 2026." Pentagon mine clearance estimates and self-reinforcing closure dynamics (insurance withdrawal, infrastructure damage) support extended timeline. | Forecast | Medium | 55–65% | 70–80% |
| B — Partial reopening | U.S. convoy operations establish a corridor. Insurance markets partially re-enter. Shipping volumes recover to 40–60% of pre-war levels. Naphtha supply partially restores at elevated cost with logistical friction. Cost escalation is the dominant effect rather than availability cessation. | Forecast | Med / Low | 25–30% | 25–35% |
| C — Full resolution | Ceasefire, mine clearance, and reopening within 6 months. Requires diplomatic breakthrough with no currently visible pathway — but timeframe allows for geopolitical shifts (Chinese mediation, domestic political pressure). Even with reopening, recovery timelines are 9–18 months for full normalization (Dow, ICIS), so residual disruption persists. | Forecast | Low | 8–12% | 10–15% |
U.S.-Iran escalation beyond Hormuz (broader Gulf infrastructure strikes). Chinese petrochemical export controls tighten further. Korean government fails to secure alternative naphtha for Q3. Formosa Plastics shuts a cracker entirely. NA resin allocation language appears in formal supplier notices.
Ceasefire holds with verified mine clearance. Korean crackers restore to 80%+ utilization. Japan secures sufficient alternative feedstock to maintain parts output. Formosa lifts FM and restores Taiwan cracker rates. NA resin pricing stabilizes with domestic allocation adequate.
| Model | Assembly | Parts Source | Notes | Tier |
|---|---|---|---|---|
| Kia EV4 | Korea | 100% Korea | Canada-only. No U.S. parts pipeline. | Tier 1 |
| Kia EV5 | Korea | 100% Korea | Canada-exclusive. Not sold in U.S. | Tier 1 |
| Kia EV3 | Korea | 100% Korea | U.S. launch uncertain. | Tier 1 |
| Kia Niro PHEV | Korea | 100% Korea | PHEV discontinued in U.S. for 2026. | Tier 1 |
| Hyundai Kona EV | Korea | 100% Korea | Electric skipped in U.S. for 2026 MY. | Tier 1 |
| Hyundai IONIQ 6 | Korea | 100% Korea | Discontinued in U.S. | Tier 1 |
| Genesis GV70/e | Korea | 100% Korea | Top-selling Genesis in Canada (~5,355 units). | Tier 2 |
| Kia Soul | Korea | 100% Korea | Sold in both markets. | Tier 2 |
| Kia Carnival | Korea | 100% Korea | Korea-built for all markets. | Tier 2 |
| Hyundai Tucson | Mexico | Bumpers: Mobis AL | Top seller (~42K units). Some trim Korea-sourced. | Tier 3 |
| Kia Sportage | Georgia | Bumpers: Mobis GA | Major seller (~24K units). | Tier 3 |
| Hyundai Santa Fe | Alabama | Bumpers: Mobis AL | Bumpers/IP from Mobis Alabama. | Tier 3 |
| Hyundai IONIQ 5 | Georgia | Bumpers: Mobis GA | Built at Metaplant Georgia. | Tier 3 |
Full 34-model assessment available. Source: OEM disclosures, MarkLines, Mobis Parts Canada.
| Supplier | Parts | Key Resins | HMG Dep. | Risk |
|---|---|---|---|---|
| SL Corporation | Headlamps, rear lamps, mirrors | PC, PMMA, ABS | ~55% Korea | Critical |
| Seoyon E-Hwa | Door trim, grilles, pillar trim | PP, ABS, PC-ABS | 87% | Critical |
| Hwaseung R&A | All weather strips, hoses | EPDM, TPV, NBR | Multi-OEM | Critical |
| Hyundai Mobis | Bumper fascias, IP frames | PP-TPO, ABS | Captive | Protected |
| Brand | Models | Assembly | Tier |
|---|---|---|---|
| Subaru | Forester, Outback, Crosstrek, WRX, BRZ, Solterra, Legacy, Impreza | Japan (all) | Tier 1 |
| Mazda | CX-5, CX-30, CX-70, CX-90, Mazda3, MX-5 | Japan | Tier 1 |
| Mazda | CX-50 | Alabama (JV) | Tier 3 |
| Mitsubishi | Outlander PHEV, Eclipse Cross, RVR | Japan | Tier 1 |
| Nissan | ARIYA, Z, LEAF | Japan | Tier 1 |
| Nissan | Rogue, Pathfinder, Kicks | NA (TN, MS) | Tier 3 |
| Toyota | RAV4, Corolla | Canada (ON) | Tier 3 |
| Honda | Civic, CR-V | Canada (ON) | Tier 3 |
Tier 3 models may still have Japan-sourced lamps, ADAS sensors, and electronic modules. Source: OEM disclosures, MarkLines.
| Brand | Models | Assembly | Tier |
|---|---|---|---|
| Porsche | 911, Cayenne, Macan, Taycan, Panamera | Europe (all) | Tier 1 |
| MINI | Cooper, Countryman | Europe (all) | Tier 1 |
| BMW | 3 Series, 5 Series, 7 Series, i4, iX | Europe | Tier 1 |
| Mercedes-Benz | C-Class, E-Class, S-Class, GLC | Europe | Tier 1 |
| BMW | X3, X5, X6, X7, XM | Spartanburg, SC | Tier 3 |
| Mercedes-Benz | GLE, GLS, GLE Coupe | Tuscaloosa, AL | Tier 3 |
| VW | Atlas, Tiguan, Jetta, Taos | Chattanooga / Puebla | Tier 3 |
| Audi | Q5 | San José Chiapa, MX | Tier 3 |
GLC currently European-assembled. MB announced Tuscaloosa production; timeline 'next few years.' Source: BMW Group, MB Group, VW Group, Audi MediaCenter.
NA petrochemical producers crack ethane from natural gas liquids, not naphtha. This feedstock is domestically sourced and not routed through the Strait of Hormuz.
| Exception | Detail | Risk |
|---|---|---|
| Stellantis Italian brands | Alfa Romeo (Stelvio, Giulia, Tonale), Fiat (500e) — European-assembled. | Elevated |
| Tesla Shanghai | Model 3 variants from Shanghai Gigafactory. | Elevated |
| ADAS sensors (all) | Bosch, Continental, ZF, Mobileye. Global sourcing. | Watch |
| Tariff disruption | Countertariffs may shift sourcing. USMCA review July 2026. | Watch |
Not stockable. Not protected by NA assembly. These represent repair-stall risk independent of plastics exposure.
Taiwan produces ~80% of global aftermarket collision replacement parts and ~90% of aftermarket plastic parts (TAITRA/TABPA — production-base share). This is the cost-control lever — when aftermarket supply tightens, severity increases across the collision portfolio where aftermarket substitution is used.
| Category | Key Resin | Taiwan Share | AM-to-OEM Delta | Risk |
|---|---|---|---|---|
| Bumper Covers | PP, TPO | Very high (~90% of plastic AM) | 40–70% | Highest |
| Headlamps | PC, PMMA + PP housing | Very high (Depo, TYC, Eagle Eyes) | 50–100% | Highest |
| Taillamps | PC, PMMA, ABS | Very high | 30–60% | High |
| Fenders | Steel | High | 30–50% | High |
| Hoods | Steel / aluminium | High | 30–60% | Elevated |
| Grilles | ABS, PC-ABS | High | 20–40% | Elevated |
| Mirrors | PP housing, glass | Moderate | 30–50% | Elevated |
AM-to-OEM deltas are directional estimates based on industry reporting, not a controlled pricing study. Validate against internal estimate data.
| Manufacturer | Key Products | CAPA | China Ops |
|---|---|---|---|
| Tong Yang Group | Bumper covers, fenders, hoods, grilles, IP, radiator supports | Participant | Multiple |
| Depo Auto Parts | Headlamps, fog lamps, taillamps · US subsidiary Maxzone | Participant | 5 facilities |
| TYC Brother Industrial | Replacement lamps · US distribution via Genera Corp | Participant | Yes |
| Eagle Eyes | Auto lamps · Ships to 100+ countries | Participant | Yes |
| Conjoin Key / Cobra King | Sheet metal panels, plastic fascias | Participant | Unknown |
Taiwan's aftermarket industry has weathered supply disruptions before. This event is structurally different:
| 1 | Upstream feedstock, not logistics. The constraint is on naphtha supply to crackers that produce the resins, not freight congestion or port delays. |
| 2 | Force majeure at Taiwan's sole private cracker. FPCC's reduced rates affect the entire downstream resin supply available to aftermarket manufacturers. |
| 3 | Claims severity control, not just procurement. When aftermarket parts tighten, the cost flows to insurers through estimate approval, supplements, and OEM substitution. |
| 4 | Not model-specific. Unlike OEM disruption (Korean, Japanese, German), aftermarket disruption can appear across any make and model where AM substitution is used. |
| Status | Step |
|---|---|
| Fact | Hormuz closure reduces naphtha flow to Taiwan. FPCC declares force majeure. Cracker rates fall to 33–43%. |
| Fact | Reduced ethylene/propylene output. Formosa Plastics Group subsidiaries raising prices, declaring FM on downstream products. |
| Inference | Taiwanese aftermarket manufacturers face resin cost increases and potential allocation. Manufacturers compete for resin with packaging, electronics, and domestic industries. |
| Inference | Aftermarket bumper covers, lamps, fenders, hoods become more expensive. If allocation bites, lead times extend. |
| Inference | If aftermarket parts become unavailable or uneconomic, estimates may require OEM, recycled, or reconditioned substitution — increasing severity. |
| Inference | Severity pressure could appear across the collision portfolio where AM substitution is used. Realized impact depends on usage rate, distributor inventory, and part-category mix. |
| Step | Option | Cost / Cycle Impact |
|---|---|---|
| 1 | Aftermarket part available | Lowest cost. Standard DRP estimate path. |
| 2 | Recycled / reconditioned part | Variable cost. May be lower than AM for some categories. Availability inconsistent. |
| 3 | Repair existing damaged part | Labour cost replaces parts cost. Not available for all damage types. |
| 4 | OEM part substitution | Highest parts cost. 30–100%+ premium over aftermarket depending on category. |
| 5 | Delay — wait for AM availability | Extends cycle time, rental duration. Supplement stacking risk. |
Taiwan production disruption does not mean immediate Canadian impact. NA distributors hold warehouse inventory that creates a buffer. The size of this buffer determines timing.
| Scenario | Distributor Inventory | Expected Timing | Operational Meaning |
|---|---|---|---|
| Low buffer | 2–4 weeks | Immediate pressure (May–June) | Monitor weekly. Escalate if confirmed. |
| Base case | 6–10 weeks | Q3 pressure (July–August) | Validate now. Prepare contingency guidance. |
| High buffer | 3+ months | Q4 or later | Watch replenishment orders. Lower near-term urgency. |
High aluminium-intensity vehicles: F-150 (all-aluminium body), Tesla Model S/X/Y, BMW 5/7 Series, Audi A8, Range Rover, Jaguar F-PACE, Corvette. Industry trend toward aluminium closures increases fleet-wide exposure. This inverts the plastics logic — NA assembly does not insulate.
Refinish paint pricing affects every collision repair regardless of vehicle origin. Direct severity-per-claim driver across the entire claims book.
Paint thinner / solvent availability is a separate and emerging risk. Thinners (toluene, xylene, ethyl acetate) are naphtha-derived aromatics — same disrupted feedstock pathway. Toyoda Gosei warned April 28 that thinner shortages could halt OEM vehicle production as early as June; METI intervened April 13 requesting manufacturers ensure stable thinner supply after distribution bottlenecks appeared in Japan's housing and automotive maintenance sectors. For collision repair, the risk is distinct from parts delays: a thinner shortage constrains shop throughput on every vehicle in-process, not just specific models. Refinish-grade reducers (PPG, Axalta, Sherwin-Williams) share the same toluene/xylene feedstock as OEM production solvents but are distributed through different channels. Monitor refinish supplier allocation language and body shop reports of reducer availability.
| Material | Mechanism | Status |
|---|---|---|
| Steel | Energy-cost pass-through. European steelmakers face same gas cost surge as chemical producers. | Cost Surge |
| Structural Adhesives | Required for aluminium panel replacement. Compounds with aluminium disruption. | Elevated |
| Glass | Energy-cost driven. ADAS windshields require model-specific calibration. | Watch |
| Synthetic Rubber | Same naphtha pathway as plastics. EVs carry ~52% more rubber content. | Elevated |
| Shipping / Logistics | ~170 containerships / ~450K TEUs affected. Transit time additive to production delays. | Elevated |
Expand any country below for auto-parts exposure detail, broader economic context, and key indicators.
Auto Parts Exposure
All five major petrochemical producers (YNCC, LG Chem, Lotte, Hanwha, GS Caltex) in force majeure or output-cut status. 77% of naphtha imports sourced from Middle East. Government naphtha export ban in effect since March 27 (5 months, through ~Aug 27) — extension to petrochemical products under review. Third-party HMG suppliers (Seoyon E-Hwa, SL Corp, Hwaseung R&A) compete for scarce resin against every other plastics-consuming industry. PE supply prices +200,000 won/ton in March with +400–800k won/ton notified for next month. Russian naphtha waiver (LG Chem 27,000t cargo) expired and was not renewed — constraining that alternative. Anjeon Industries engine valve fire (March 20) compounds HMG production disruption. 26 Korean ships stranded in Hormuz; HMM Namu confirmed struck by unidentified aerial objects May 4 — Seoul considering joining US-led Hormuz mission.
Broader National Impact
Semiconductors: Samsung and SK Hynix (~70% global DRAM, ~80% HBM) face photoresist supply disruption. Japanese suppliers warned both firms. 14 semiconductor supply chain items flagged by industry ministry — including helium (65% from Qatar, facility offline) and bromine (90% from Israel).
Food & packaging: PE/PP packaging prices +20–30%, some raw materials +50% YoY. 13 food industry associations report ~2 weeks of packaging inventory remaining. Government approved temporary sticker labeling for food/cosmetics.
Consumer: Mandatory waste bag shortages and panic buying. PX supply gap threatening polyester fiber, PET bottles, clothing, and automotive interior films.
Financial: KOSPI suffered worst single-day drop in history (–12.06%) on March 4. Market has since recovered to record highs on semiconductor demand. Factory input cost inflation at record high.
Auto Parts Exposure
~42% of naphtha imports from Middle East. PM Takaichi stated May 1 that naphtha supply is now expected to last into 2027 via diversified procurement (US, Algeria, Peru — imports tripling in May vs. pre-war) and crude reserve releases. However, cracker utilization hit a record monthly low of 68.6% in March (JPCA), with ethylene output down 38.8% YoY. Government securing supply ≠ uninterrupted production of automotive-grade service-part SKUs. Subaru and Mazda carry highest Canadian exposure (Japan-assembled, no confirmed NA parts fallback). Toyoda Gosei warned material disruptions could begin as early as June, specifically naming paint thinners as a critical production bottleneck. Aisin CEO: "How long we can sustain that is uncertain." Denso FY27 guidance well below consensus. Toyota Boshoku seeking shorter-term supplier commitments.
Broader National Impact
Semiconductors: Japan is a critical supplier of photoresist, specialty gases, and semiconductor-grade chemicals. Naphtha-derived solvents feed into chip fabrication.
Consumer / packaging: Mizkan suspended sales of four natto products (May 4) citing naphtha-driven packaging cost increases; 6–20% price hikes announced. Japan Painting Industry Association raised concerns over paint thinner distribution — METI intervened April 13 requesting manufacturers ensure stable supply.
Shipping: Government working to secure safe passage for Japanese vessels stranded in the Persian Gulf.
Auto Parts Exposure — Aftermarket
Taiwan produces ~80% of global aftermarket collision replacement parts and ~90% of aftermarket plastic parts (TAITRA/TABPA — production-base share, not Canadian import share). Key manufacturers (Tong Yang Group, Depo/Maxzone, TYC, Eagle Eyes, Conjoin Key) are CAPA-certified and supply the bumper covers, lamps, fenders, hoods, and grilles that DRP shops use to manage severity.
Formosa Petrochemical — Feedstock Status
FPCC operates Taiwan's only private refinery and naphtha cracker at Mailiao. Force majeure declared on ethylene and propylene (March 10). Refinery utilization fell to ~43% in April; naphtha cracking rate fell to ~33% (FPCC President via Focus Taiwan/CNA, May 5). Feedstock output down ~50% in March. Formosa Chemicals & Fibre declared FM on styrene monomer, phenol, and PTA from April. A Saudi crude supertanker (2M barrels) arrived at Mailiao Port May 6–7 — partial relief. FPCC projects May refinery utilization >60%, June 80%, by sourcing from Red Sea, Gulf of Oman, Mediterranean, and West Africa. CPC Corp activated its No. 4 naphtha cracker (week of Mar 30), boosting national ethylene from 60kt/mo (Apr) → 79kt (May) → 90kt (Jun projected).
Broader National Impact
Consumer: Costco Taiwan imposed purchase limits on plastic packaging products. Formosa Plastics raising prices across most product lines. Polystyrene up to +46%.
Semiconductor: TSMC monitoring but no material impact reported.
Petrochemical Posture
China is the asymmetric beneficiary of the Hormuz crisis. Sinopec Q1 ethylene utilization at 89% (only −1.5% YoY); refinery utilization ~83%. Sinopec targets +26% chemical exports for 2026 (3.65 MMt). Chinese PP exports hit an all-time monthly high in March 2026. PetroChina reports Hormuz accounts for only ~10% of its crude/gas supply. However, NDRC issued an April 17 directive ordering refiners to prioritize fuel over chemicals — capping China's ability to fully redirect output to polymer exports.
Force Majeures & Supply Disruptions
Wanhua Chemical declared FM March 9 on TDI and MDI — polyurethane intermediates critical to auto seating, foam, sealants, and structural adhesives. Wanhua is now global No. 1 MDI producer at 4.5 MTPA with 700kt Fujian expansion announced for Q2. CNOOC-Shell Huizhou JV suspended PE shipments indefinitely from March 5.
Sanctions & Trade Policy
OFAC sanctioned Hengli Petrochemical (Dalian) on April 24 for Iranian crude purchases (~5M+ barrels traced). Wind-down license expires May 24. MOFCOM issued a formal blocking order May 2 against five sanctioned refiners — first formal use of China's 2021 counter-sanctions rules. Teapot refineries continue operating under the blocking order but face elevated risk. China imported ~1.4 mbd Iranian crude in 2025 via shadow fleet.
Auto Parts Exposure
China is a net petrochemical exporter serving as stopgap supplier for Japanese and Korean buyers — this redirects Chinese production away from other export markets, tightening global availability. Several major Taiwanese aftermarket manufacturers (Tong Yang, Depo, Eagle Eyes) have China production facilities. Tesla Shanghai-built Model 3 units entering Canada are the primary direct OEM exposure. Chinese NA-bound auto parts also face Section 232 tariff stacking (15–50% range).
Resource Controls
Sulfuric acid export ban effective May 1 (~3–4.65M tonnes/year removed from global market). Follows phosphate fertilizer export suspension and earlier critical mineral restrictions (tungsten, germanium, gallium). Tungsten hexafluoride (WF6) supply to Korean/global chipmakers tightening under export controls.
Auto Parts Exposure
European auto parts exposure is a cost surge, not a supply cessation. European resin producers face elevated natural gas and crude costs. BMW, Mercedes-Benz, Audi, VW, Porsche, MINI parts costs rising. European refinish paint suppliers (PPG, Axalta, BASF, AkzoNobel) have announced 6.8–7.6% increases in 2026.
Broader National Impact
Energy: Compounded energy cost pressure — 2022 Russian gas crisis followed by 2026 Hormuz shock. Steelmakers, glass producers, and chemical companies all under margin pressure.
Aluminium: European smelters already curtailed. Gulf smelter disruption adds further pressure (~23% of ex-China production).
Auto Parts Exposure
NA resin production is NGL-based (natural gas liquids), structurally insulated from naphtha disruption. NA PP spot prices stable. However, export pull is the risk: NA producers running at max capacity and increasing exports to fill global gap. Ford, GM, Stellantis core models insulated for plastics. Stellantis Italian brands (Alfa Romeo, Fiat) are the primary exception.
Broader National Impact
Consumer fuel: US gas prices up ~50% since war began. California average above $6/gallon.
Sulfuric acid: US/Canada protected under USMCA — among least affected economies. Canada is a net producer/exporter via smelters.
Canada-specific: Subaru shifted Canada-market production from Indiana back to Japan due to countertariffs — increasing parts exposure during crisis window.
Iran: Halted all petrochemical exports (April 27). 85% of export capacity disrupted. Major global sulfur and petrochemical producer — removal compounds every downstream disruption.
Bahrain: Alba aluminium smelter (~1.6M tonnes/year capacity) — one of the world's largest. Production cuts deepen Gulf aluminium supply gap.
Qatar: Ras Laffan helium facility (>1/3 of global production) offline since Iranian drone strikes March 2. Korea sourced 65% of helium from Qatar in 2025. Critical for semiconductor fabrication — no viable substitute.
| Category | Trigger |
|---|---|
| Korean | Seoyon E-Hwa or SL Corporation disclose resin procurement difficulty. Mobis Parts Canada issues allocation advisory. |
| Korean | Dealer lamp/mirror ETAs extend before bumper ETAs (confirms third-party bottleneck thesis). |
| Japanese | Koito or Stanley Electric production cuts at Japan plants. Subaru or Mazda dealer parts allocation notices. |
| German/European | Automotive-grade PP or ABS force majeure from European producer. European suppliers begin rationing. |
| NA / Cross-Cutting | NA PP allocation announced. TPE newsletter uses "allocation" or "rationing." Formosa Plastics (Taiwan) FM ✓ ACTIVE |
| NA / Cross-Cutting | Backorder % rises >2σ. Days-to-repair exceeds 30-day rolling baseline by >15%. |
| Aftermarket | LKQ/Keystone/Certifit price increase on Taiwan-sourced bumper covers or lamps. DRP shops request OEM-only authorization on categories that previously used aftermarket. |
| Geopolitical | Project Freedom triggers ceasefire collapse. Iran strikes Fujairah oil hub (confirmed May 4) — bypass route now under threat. Korea naphtha resupply via Yanbu/Fujairah disrupted. |
| Aluminium | Alba production cuts deepen. EGA capacity further reduced. LME sustains above $3,500/t. |
Hormuz closed. Price increases flowing through global markets. NA physical supply available from inventory + domestic NGL feedstock. Global polymer prices up ~30–50% by segment.
Resin manufacturers drawing down ~6 weeks of raw material inventory. Specialty grades tightening first. Export pull from NA accelerating. Korean producers in force majeure. Japanese producers cutting output.
Resin allocation expected broadly, especially specialty grades. Tier 1 country supply chains (Korea, Japan) severely impacted. Lead times extending for Tier 2/3 suppliers. NA domestic tightening likely if export pull continues.
Parts backorders materialize at scale in NA. Claims cost impact compounds — rental costs extend, supplements stack, severity-per-claim increases.
| Brand | Model | Assembly | Tier | US? | Bumpers | Lamps | Mirrors | Trim | Seals | Liners | ADAS | Interior |
|---|
VIN prefix guide: K = Korea, J = Japan, W = Germany, S = UK, T = Hungary/Slovakia, 3 = Mexico, 1/2/4/5 = US
Canada-only Korean models (EV3, EV4, EV5, Niro PHEV, Kona EV, IONIQ 6) have no US parts pipeline fallback.
Risk types differ by OEM group: Korean = supply cessation (force majeure). Japanese = production cuts. German = cost surge.
Subaru Canada-market units shifted from Indiana to Japan due to countertariffs — increasing exposure during crisis.
Bumper covers for Korean models: Mobis molds in-house with priority resin allocation — last category to ration. Lamps ration first.
ADAS sensors/cameras are globally sourced and not protected by NA assembly. Watch across all tiers.
Assembly location is an exposure proxy, not proof of replacement-parts origin. This is an exposure screen, not a procurement recommendation. Verify by dealer ETA and EPC before operational action.
| Brand | Model | Assembly | Tier | ADAS | Calibration | SRS | Harness |
|---|
| Category | Top Suppliers | Share | NA Operations | Risk |
|---|---|---|---|---|
| Wire Harnesses | Yazaki, Sumitomo, Kyungshin, Yura, Leoni, Aptiv | Japanese firms ~60% | Yazaki: Mexico. Aptiv: Mexico, US. Kyungshin/Yura: US, Mexico. | Hand-assembled, model-specific, not stockable. 8–16 week lead times. |
| ADAS Sensors | Bosch, Continental, ZF, Valeo, Mobileye, Denso | Top 7 = ~32% | Bosch: MI, SC. Continental: MI, TX. Denso: MI, TN, AL. | Model-specific. Calibration parts non-interchangeable. |
| Calibration Brackets | OEM-specific, low-volume | Often single-source | Limited — shipped from assembly country | Non-substitutable. Low safety stock at distributors. |
| SRS Airbag Modules | Autoliv, ZF, Joyson, Toyoda Gosei | Autoliv ~47%, ZF ~20% | Autoliv: UT, MI, IN. ZF: MI, SC. Joyson: MI, TN. | Model-specific. Curtain, side, knee, front all different PNs. |
| SRS Clockspring | OEM-captive or Tier 1 | Concentrated | Follows harness supplier | Often overlooked. Required for steering-wheel airbag reconnection. |
| HV Battery Harness | Yazaki, Sumitomo, Aptiv, Leoni, Kyungshin | Same as wire harness | Same as wire harness | Safety-critical. Often non-repairable. Replace = extended cycle. |