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South Dakota at a glance
Street legal- Status
- Street legal; no Kei-specific rules
- Where you can drive
- Any public road open to other cars and pickups
- Speed rule
- None specific to Kei Trucks; posted limits apply
- Interstates
- Allowed; the off-road vehicle ban does not reach a road-built truck
- Title / registration
- County treasurer; 4% excise tax; plate fee $36 a year up to 2,000 lb or $72 for 2,001-4,000 lb
- Inspection
- None
- Emissions
- None
- Key law
- SDCL 32-5-6 (fees), 32-3-4 (title without plates), 32-20-1(4) (off-road vehicle definition)
Is a Kei Truck street legal in South Dakota?
Yes. We found no South Dakota statute or Department of Revenue guidance about Kei Trucks in either direction, so the ordinary rules are in charge. Your county treasurer issues the title and plates. The license fee for a noncommercial automobile, pickup or van comes from SDCL 32-5-6, which prices the plate by the manufacturer's shipping weight, accessories included.
Most Kei Trucks weigh somewhere around 1,500 to 2,000 pounds empty (a typical range that varies by model, drive and body). That puts many of them in the cheapest bracket, $36 a year at 2,000 pounds or less. Past that line the fee doubles to $72, up to 4,000 pounds. A 4WD truck with a dump bed can land on either side, so read the weight printed on the export certificate before you count on the lower fee.
Does South Dakota treat a Kei Truck as an off-road vehicle?
No, and that distinction matters. SDCL 32-20-13 lets certain all-terrain and off-road vehicles be licensed as motorcycles for road use, then bars them from the interstate system. That class only reaches vehicles that meet SDCL 32-20-1(4), which describes a vehicle "designed primarily to be operated on land other than a highway," or one whose origin documents say it belongs off the highway. Kei Trucks were designed for Japanese roads, and a 25-year import carries no papers calling it off-road. If a clerk reaches for the off-road class, ask them to read that definition with you.
Where can you drive a Kei Truck in South Dakota?
On any public road a pickup can use. No South Dakota law caps a Kei Truck's speed or keeps it off a type of road. Some online tables attach a 65 mph figure to South Dakota; we found no Kei rule behind it, so do not plan around it as a limit.
Interstates are legal, but a 660 cc engine and fast traffic make a poor pairing, especially in a prairie crosswind. Most owners will be happier on county and township roads. The neighbors differ: the Wyoming transportation department lists mini farm trucks among its multipurpose vehicles, a class that may not use interstates, so check the rules before a run across the line.
How do you title and plate a Kei Truck in South Dakota?
Start at the treasurer's office in your home county. The Department of Revenue lists a $10 title fee and the 4% motor vehicle excise tax, which SDCL 32-5B-1 charges on the purchase price in place of sales tax. Register within 45 days of buying the truck, because fees are counted from the purchase date. Bring the federal import file described in our importing guide, and see the 25-year rule guide if you are unsure your truck qualifies.
Read the weight on the export certificate
Convert the listed weight from kilograms to pounds by multiplying by 2.2. It tells you whether the plate will cost $36 or $72 a year.
Assemble the import file
Bring the customs entry papers, an HS-7 declaration marked box 1, EPA Form 3520-1, the Japanese export certificate with a certified English translation, and the bill of sale.
Buy insurance
Get a liability policy that meets South Dakota's 25/50/25 minimum before you register the truck.
Visit the county treasurer
File the Motor Vehicle and Boat Title Application, pay the $10 title fee and the 4% excise tax, and register within 45 days of the purchase date.
Mount the plate
Fit a US plate bracket or adapter so the plate and its lamp sit where an officer can read them.
South Dakota's title law adds an option few states write down. Under SDCL 32-3-4, if you certify on the application that the truck "is not going to be used upon the highways of this state or any other state," the treasurer can title it without collecting excise tax. The catch: a truck titled that way cannot get license plates. That suits a ranch truck that never leaves the gate, and little else.
Inspection, emissions and insurance
There is no state safety inspection in South Dakota and no emissions test. That moves the job to you, since lights, brakes, mirrors and glass still have to meet the equipment laws every vehicle follows. A truck this age often needs Kei Truck lights or brake parts before it sees highway miles.
SDCL 32-35-70 sets the liability floor at 25/50/25: $25,000 per injured person, $50,000 per crash for all injuries, and $25,000 for damaged property. The US plate also needs a proper mount, since the bracket on a Japanese truck was made for a Japanese plate.
For the national picture, 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 South Dakota interstates?
Yes. No South Dakota statute keeps a Kei Truck off the interstate, and the interstate ban in SDCL 32-20-13 covers only the off-road vehicle class, which a road-built truck does not fit. Legal is not the same as comfortable. A 660 cc truck is slow next to interstate traffic, so most owners stay on county roads and two-lane highways.
Does South Dakota inspect Kei Trucks?
No. South Dakota does not inspect vehicles on a schedule and has no emissions program, so nothing beyond your paperwork is checked before the plates go on. Equipment laws still apply on the road, which makes working headlights, brake lights, turn signals, mirrors and brakes your responsibility. Fix them before the first drive rather than after a traffic stop.
How much does it cost to plate a Kei Truck in South Dakota?
Plan on a $10 title fee, the 4% motor vehicle excise tax on what you paid, and an annual license fee set by shipping weight: $36 at 2,000 pounds or less, or $72 between 2,001 and 4,000 pounds. The Department of Revenue also lists smaller items such as a $2 technology fee and a $10 lien notation fee when a loan is involved.
Can I title a Kei Truck in South Dakota without buying plates?
Yes. Under SDCL 32-3-4, if you certify that the truck will stay off public highways in South Dakota and every other state, the treasurer can issue a title without collecting the 4% excise tax. A truck titled that way cannot get license plates. Ask the treasurer what plating it later would involve before you choose this route.
I don't live in South Dakota. Can I register my Kei Truck there?
Registration is meant for residents. Some owners in stricter states register through a South Dakota LLC while the truck lives elsewhere, which can break their home state's residency and garaging rules and give an insurer grounds to deny a claim. South Dakota also adds a $100 title charge when the applicant has no South Dakota license or physical address. Talk to an attorney first.
Sources
- SDCL 32-5-6, license fees for noncommercial automobiles, pickup trucks and vans
- SDCL 32-20-1, definitions including off-road vehicle
- SDCL 32-20-13, all-terrain and off-road vehicles licensed for highway use
- SDCL 32-3-4, title issued without tax for vehicles not used on highways
- SDCL 32-5B-1, motor vehicle excise tax
- SDCL 32-35-70, minimum liability coverage
- South Dakota Department of Revenue, title fees and registration
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.
