Commercial Vehicles Under the Montana Lemon Law
How Montana's personal-use rule and 15,000-lb truck cap affect commercial vehicles — and why Magnuson-Moss and the CPA carry the load for fleets and heavy trucks.
The Montana Lemon Law covers vehicles bought or leased for personal, family, or household use, and excludes trucks of 15,000 lbs GVW or more (§ 61-4-501). So business-use vehicles and heavy trucks largely fall outside.
What’s covered and excluded
- Covered — new vehicles for personal/family/household use, under 15,000 lbs.
- Excluded — business/commercial-use vehicles and trucks 15,000 lbs GVWR or more; motorcycles are not named in the Act and likely fall outside it.
The personal-use line and the 15,000-lb cap
Montana’s coverage is personal-use focused — a vehicle bought for a business or commercial use falls outside the lemon law. The weight cap is 15,000 lbs, higher than the common 10,000-lb cutoff, so more heavy-duty personal-use pickups (common on Montana ranches) stay in scope, but genuinely commercial trucks and fleets do not.
What fills the gap for commercial vehicles
- Magnuson-Moss — federal warranty claims; § 2310(d)(2) fees (subject to the consumer-product definition).
- Montana CPA — for unfair or deceptive practices in a fleet purchase, with a discretionary treble and fees.
- UCC breach-of-warranty (§ 30-2-314 / -315) — 4-year SOL.
Montana commercial-vehicle context
- Ranching, agriculture, and the Bakken oil region (eastern Montana) run heavy trucks and fleets.
- Mag-chloride de-icer and mountain grades are hard on commercial brake and electrical systems.
- Vast distances drive high mileage and long downtime.
Bottom line
Montana covers personal-use vehicles under 15,000 lbs; business-use vehicles, heavier trucks, and motorcycles rely on Magnuson-Moss and the CPA. Get a free case review to assess coverage.
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Read → ArticleLeased Vehicles Under the Montana Lemon Law
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Read → ArticleMotorcycles Under the Montana Lemon Law
Why motorcycles likely fall outside Montana's lemon law — the Act's passenger-vehicle scope — and the Magnuson-Moss and Consumer Protection Act alternatives that apply.
Read → ArticleRVs and Motor Homes Under the Montana Lemon Law
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Read → ArticleUsed Vehicles Under the Montana Lemon Law
How Montana's lemon law applies to used vehicles — coverage during the original warranty period, plus the CPA (discretionary treble + fees) and Magnuson-Moss.
Read →Think you've got a lemon?
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