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Wyoming at a glance
Legal, no interstates- Status
- Legal with limits (multipurpose vehicle)
- Where you can drive
- Public streets and highways, never interstates
- Speed rule
- No cap; if the truck cannot reach a road's posted limit, keep far right with a flag or slow-moving vehicle emblem
- Interstates
- Not allowed
- Title / registration
- County clerk title and county treasurer plates; $25 state fee plus a county fee of at least $5
- Inspection
- VIN inspection only; no safety inspection
- Emissions
- None
- Key law
- Wyo. Stat. § 31-1-101(a)(xv)(M) and 31-5-124(b)
Is a Kei Truck street legal in Wyoming?
Yes, as a multipurpose vehicle (MPV). Wyoming's definition, found at Wyo. Stat. § 31-1-101(a)(xv)(M), uses measurements a Kei Truck meets: at least four wheels on the ground, an unladen weight of at least 300 pounds but under 3,000, a permanent upright driver's seat at least 24 inches off the ground, and an identifying number. The Wyoming Department of Transportation (WYDOT) names "mini farm trucks" among its examples in its MPV guidance, and its 2021 MPV checklist says these vehicles need no federal safety label to be titled and registered.
One wrinkle remains. The same section defines "truck" in a way that leaves out multipurpose vehicles, while the MPV definition picks up vehicles that fit its measurements and are not covered elsewhere. A county could, in theory, read a Kei Truck as a plain truck. Ask your county clerk which class it will use, because that answer settles interstate access.
Where can you drive a Kei Truck in Wyoming?
Wyo. Stat. § 31-5-124(b) opens public streets and highways to multipurpose vehicles, with three conditions:
- No interstates, ever.
- Keep right when you can't keep up. If the truck cannot reach the highest speed allowed on that road, it must run at the extreme right edge and display a slow-moving vehicle emblem or a reflectorized flag.
- Slow by design. An MPV built for speeds under 25 mph must always carry a slow-moving vehicle emblem. A Kei Truck is faster, so this rarely applies.
There is no speed cap. The keep-right rule switches on only when the truck falls short of the posted limit, so it works as a hold-the-limit test. Wyoming's elevation takes power from a naturally aspirated 660 cc engine, which makes a flag or emblem behind the seat cheap insurance.
WYDOT's checklist also notes that MPVs are meant mainly for off-road and related use rather than everyday transportation. Next door, South Dakota plates the same truck like a small pickup with no interstate ban, while Utah caps it at 50 mph as a novel vehicle.
How do you get a Wyoming title and plates for a Kei Truck?
The county clerk issues the title and the county treasurer issues plates. Vehicles arriving from outside the state need their identification number checked, and in practice that means a Wyoming law enforcement officer. WYDOT's guidance says every MPV must be titled, but registration is needed only for public-road use.
Fees are modest. The state fee for an MPV is $25. The county fee for a vehicle in its sixth year or later is 3% of 15% of the factory price, with a $5 minimum, and where no factory price exists the county may accept your sworn affidavit of value. Bring the federal import file from our importing guide, and see the 25-year rule guide if you are unsure your truck qualifies.
Ask the county clerk which class it will use
Confirm the truck will be titled as a multipurpose vehicle, and ask what the office wants to see for a Japanese export certificate.
Assemble the import file
Bring customs entry papers, the HS-7 declaration marked box 1, EPA Form 3520-1, the export certificate with a certified English translation, and your bill of sale.
Get the VIN inspection
Have a Wyoming law enforcement officer inspect and certify the identification number.
Complete the MPV checklist
Fill out WYDOT's multipurpose vehicle checklist, which you sign under penalty of perjury, and confirm the truck has every listed lamp, reflector and mirror plus brakes, a horn and a muffler.
Title, insure and register
Title with the county clerk, then register with the county treasurer, paying the $25 state fee and the county fee. Bring proof of insurance.
Equipment, inspection and insurance
There is no Wyoming safety inspection or emissions test. Instead, the MPV checklist you sign at titling lists what a multipurpose vehicle wider than 50 inches must carry before registration: two headlights, two tail lamps, two rear reflectors, two stop lamps, a muffler, brakes, mirrors and a horn. A Kei Truck is roughly 58 inches wide, so that list applies. On a 25-year-old truck, Kei Truck lights and mirrors are the usual gaps.
You need a valid driver license and insurance to drive an MPV on public roads. WYDOT's guidance says a homeowner or farm policy can count as proof of insurance if it covers the vehicle on the road, so ask your agent. For the rest of the country, see Kei Truck laws by state, and use the buying guide to check a truck before you bid.
Frequently asked questions
Are Kei Trucks allowed on Wyoming interstates?
Not as multipurpose vehicles. Wyo. Stat. § 31-5-124(b)(i) keeps every multipurpose vehicle off interstate highways, and WYDOT's checklist repeats the ban. If a county ever titled a Kei Truck as an ordinary truck instead, that rule would not apply, so ask the clerk which class you are getting. Either way, plan your routes on state and county roads.
Is there a speed limit for Kei Trucks in Wyoming?
No Kei-specific cap. The multipurpose vehicle rule is conditional: if the truck cannot reach the maximum speed allowed on a road, it must run at the extreme right edge and display a slow-moving vehicle emblem or a reflectorized flag. Only vehicles designed for speeds under 25 mph must carry the emblem all the time, and a Kei Truck is faster than that.
Do I need a title if my Kei Truck never leaves the ranch?
Yes. WYDOT's guidance says every multipurpose vehicle owner must obtain a title, but registration is needed only when the vehicle is driven on Wyoming streets or highways. Titling still involves the VIN inspection and the checklist, so do it once and keep the paperwork. You can register later if you start using public roads.
What equipment does Wyoming require on a Kei Truck?
For a multipurpose vehicle wider than 50 inches, which covers Kei Trucks, WYDOT's checklist calls for two headlights, two tail lamps, two rear reflectors, two stop lamps, a muffler, brakes, mirrors and a horn, all working before registration. Lighting rules in the general equipment code also reach these vehicles, and the driver needs a valid license and insurance.
Will my farm insurance cover a Kei Truck in Wyoming?
Possibly. WYDOT's multipurpose vehicle guidance says a homeowner or agricultural policy can serve as proof of insurance if it covers the vehicle while it is driven on streets or highways. Some insurers write that coverage and some require a separate auto policy. Call your agent and have the coverage confirmed in writing before you register.
How does Wyoming value a Kei Truck with no factory price?
Wyoming has a fix for that. Wyo. Stat. § 31-3-101(c) lets the county accept an owner's affidavit of valuation when no factory price is available to compute fees. The county fee for an older vehicle works out to 3% of 15% of that value, with a $5 minimum. Value the truck honestly and keep your bill of sale.
Sources
This page explains the rules in plain English. It is not legal advice. Laws change and offices apply them differently, so confirm with your state DMV or county titling office before you buy or register a truck.