Can You Register a Honda S660 in Washington?
Washington allows kei trucks like the Honda S660 on public roads with some restrictions. Speed limits, road class restrictions, or special registration requirements may apply.

Quick Facts
- Legal Status
- Legal with Restrictions
- Vehicle
- Honda S660
- Engine
- 658cc 3-cylinder S07A Turbo
- Horsepower
- 63 hp @ 6,000 RPM
- Payload
- N/A (2-seat roadster)
- Price Range
- $25,000 - $55,000 (grey market)
- State Sales Tax
- 6.5%
- Registration Fee
- $30
- Title Fee
- $15
- Title Required
- Yes
- Insurance Required
- Yes
- Inspection Required
- No
Honda S660 Registration in Washington
Washington allows the Honda S660 on public roads with restrictions. These may include speed limits (35 mph maximum), road class restrictions, or special registration categories. Check the full Washington kei truck laws for the specific rules that apply.
Many Washington owners use their Honda S660 for farm work, property maintenance, and short trips on secondary roads where the restrictions are manageable.
What It Costs to Own a Honda S660 in Washington
The Honda S660 typically sells for $25,000 - $55,000 (grey market) depending on year, condition, and mileage. On top of the vehicle price, Washington charges:
- Sales tax: 6.5% ($2,600 on a $40,000 truck)
- Registration: $30
- Title: $15
Total state fees on a $40,000 Honda S660: roughly $2,645. Use our Washington import calculator for a detailed breakdown including shipping, customs duty, and broker fees. For current market values, Hagerty tracks pricing trends on imported Japanese vehicles.
Honda S660 Specs
The Honda S660 (2015-2022) is powered by a 658cc 3-cylinder S07A Turbo producing 63 hp @ 6,000 RPM. It carries N/A (2-seat roadster) of payload in a bed measuring 133" L x 58" W x 46" H. All models were built to meet Japanese kei vehicle regulations with a maximum engine displacement of 660cc.
Read the full Honda S660 guide for detailed specs, common issues, recommended mods, and maintenance tips. If you are new to kei trucks, start with our complete introduction to kei trucks.
Importing a Honda S660 to Washington
Under the NHTSA 25 year rule, any Honda S660 manufactured 25 or more years ago is exempt from Federal Motor Vehicle Safety Standards and EPA emissions requirements. Check our eligibility checker to see exactly when a specific production year becomes eligible.
For a step by step walkthrough, read our complete import guide. Before purchasing, review the pre purchase inspection checklist to avoid common pitfalls. Japanese auction sites like Goo-net Exchange list current inventory with pricing.
Honda S660 Dealers in Washington
3 dealers in Washington carry kei trucks:
- Boeki USA West (Vancouver) — website. Specialties: Suzuki, Honda, Daihatsu, Mitsubishi, Subaru.
- SODO-MOTO (Seattle) — website. Specialties: Honda, Suzuki, Subaru, Mitsubishi, Daihatsu.
- The Import Guys (Ferndale) — website. Specialties: Subaru, Honda, Daihatsu, Suzuki, Mitsubishi.
Browse the full dealer directory or find all dealers in Washington.
Honda S660 in Other States
Considering registering in a different state? Laws vary significantly. Read the full state by state legality guide or check the Honda S660 in these states:
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