EV-Specific Defects Under Massachusetts Lemon Law
Battery, charging, range, OTA, and EV-specific defects under Massachusetts's substantial-impairment test — Tesla, Rivian, Lucid, and OEM EVs in the strong Greater Boston EV market.
Greater Boston has strong EV adoption — Tesla, Rivian, Lucid, and the full lineup of OEM EVs. EV-specific defects are a fast-growing Massachusetts Lemon Law category.
Common qualifying EV defects
- Range degradation beyond expected curve — substantial impairment.
- Charging system failures (DC fast charge, AC Level 2, mobile connector) — substantial impairment.
- Battery management system (BMS) failures — substantial impairment; potential safety issue.
- Battery cooling system failures — substantial impairment.
- OTA firmware updates bricking critical systems — substantial impairment.
- Regen brake failures — safety issue.
- Phantom braking on driver-assist systems — categorical safety issue.
- HV battery propulsion failures — substantial impairment.
- 12V auxiliary battery failures — substantial impairment.
- Charge port door / latch failures.
Tesla-specific patterns
Greater Boston’s Tesla market is strong. Common claims:
- Phantom braking (multiple class actions).
- Yoke steering hardware issues.
- HV battery degradation patterns.
- Autopilot / FSD driver-assist defects.
- Software bugs from OTA updates.
- Charge port heater failures (especially in New England cold).
- Cybertruck early-build issues (emerging).
Rivian-specific patterns
- HV battery cooling system issues.
- Drive-unit failures.
- OTA update bricking infotainment.
- Charge port reliability.
Lucid-specific patterns
- BMS firmware bugs.
- Air suspension failures.
- HVAC system failures (critical in winter).
New England EV environmental factors
Massachusetts’s specific EV environmental factors:
- Cold-weather range degradation — frequent winter cold below 20°F.
- Heavy precipitation stressing charge-port seals.
- Salt corrosion on charge port and HV cabling.
- Cabin heat strain in deep winter (range cost from cabin heating).
TSB / OTA overlay
EVs are heavily software-defined — most defects have TSB or OTA history. Pull:
- OTA update logs from the vehicle.
- Service bulletins from manufacturer.
- NHTSA recall database for your VIN.
- Class-action histories (heavy for Tesla).
How thresholds apply
Same § 7N½ thresholds. Software defects often manifest intermittently — careful documentation matters.
What strengthens an EV-defect claim
- OTA update history showing manufacturer’s attempts to fix.
- Range/charging data logs from the vehicle.
- TSB / recall pattern.
- Class-action history for the model — strong c. 93A willfulness evidence.
- Independent EV expert inspection.
What weakens an EV-defect claim
- Charging at incompatible stations (driver-induced).
- Aftermarket charging modifications.
- Battery degradation within manufacturer’s expected curve (typically 70-80% over 8 years).
- Cold-weather range reductions within manufacturer’s spec.
Bottom line
EV-specific defects are a fast-growing Massachusetts category. Tesla cases dominate by volume. Document OTA history, secure pattern evidence, and (for cases with class-action history) pursue c. 93A willfulness pleading for mandatory doubling/trebling plus § 9(4) fees.
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Read →Think you've got a lemon?
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