Engine Defects in Iowa Lemon Law Cases

Engine defects are among the highest-value IA lemon-law cases. They typically meet IA’s § 322G.2 substantial-impairment standard, and many trigger major recall or class-action exposure supporting § 714H willful/wanton evidence.

Why engine defects qualify

Use, value, safety all substantially affected.
Engine fire risk creates immediate safety concerns (death-or-serious-bodily-injury threshold under § 322G.3 first-attempt rule).

Major engine defect patterns by brand

Subaru FB25 2.5L boxer engine — IA-adjacent (SIA Lafayette IN)

Excessive oil consumption.
Affected: Outback, Forester, Legacy, Ascent.
Class action history; some warranty extensions.
Particularly relevant in IA Subaru market.
See Indiana Subaru coverage.

Ford EcoBoost LSPI

2.7L, 3.0L, 3.5L EcoBoost.
Engine knock at low RPM under load.
Catastrophic engine failure in severe cases.
Affected: F-150 (KC MO), F-Super Duty (KTP Louisville KY), Edge, Explorer, Expedition (KTP), Lincoln Navigator (KTP), Lincoln Nautilus / Aviator.

Ford 6.7L Power Stroke diesel (Super Duty — KTP Louisville KY-built)

DEF system crystallization, EGR cooler failures, fuel-system issues.

GM L87 6.2L V8 connecting rod failures (2021-2024)

Catastrophic engine failure.
Affected: Cadillac Escalade, Chevy Tahoe / Suburban, Silverado 1500, GMC Yukon / Sierra.
NHTSA-supervised recall.

Hyundai / Kia Theta II engine

2.0L and 2.4L GDI engines.
Multiple NHTSA-supervised recalls.
See Alabama Hyundai coverage.

Toyota fuel pump (2020 NHTSA-supervised recall)

Stalling, no-start due to fuel-pump failure.
TMMK Georgetown KY-built Camry / Lexus ES affected — see Kentucky Toyota coverage.

Honda 1.5L turbo oil dilution (Civic, CR-V, Accord)

Fuel-in-oil dilution in cold-weather operation — particularly relevant in IA winters.

Honda 3.5L V6 (Pilot, Passport, Odyssey, Ridgeline, MDX — HMA Lincoln AL-built)

VCM issues, oil consumption.

Stellantis HEMI tick / Pentastar V6

HEMI lifter failure (5.7L V8).
Pentastar V6 cylinder head issues.

BMW N20 / N26, N63 V8

Timing chain stretch / failure (N20/N26 pre-2017).
N63 oil consumption.

Mercedes-Benz M278 V8 / M276 V6

Balance shaft gear failure, timing chain wear, oil consumption.

Indian Motorcycle Thunder Stroke / PowerPlus (Spirit Lake IA — home-state)

Thunder Stroke 111/116 engine — early-production teething.
PowerPlus 108/112 engine — newer.

Documentation for an engine case

Oil consumption tracking (Subaru FB25, Honda VCM, Mercedes V6/V8).
Repair orders for each failure / repair attempt.
Engine codes.
Recall history — search NHTSA recall database by VIN.
TSBs.
Class action history — supports § 714H willful/wanton evidence.

Engine fire / safety-critical cases

Engine fire risk triggers IA’s § 322G.3 first-attempt rule for death-or-serious-bodily-injury defects:

First repair attempt for the safety defect triggers the threshold-reaching-date for the offset cap.
Mileage offset is minimal.
Refund approaches full purchase price.

§ 714H multi-violation potential

Engine defects with documented manufacturer awareness create strong § 714H willful/wanton potential under heightened proof standard:

Pre-recall internal awareness.
Recall-effectiveness misrepresentations.
Pattern conduct.

Bottom line

Engine defects are high-value IA lemon-law cases. The § 322G.3 first-attempt safety rule produces near-full refund for safety-critical defects (offset cap at first attempt). § 714H up-to-treble damages potential when willful/wanton evidence meets heightened proof standard.

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