West Northamptonshire is an English Unitary Authority. It was created in April 2021.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2021 | 3,251,300,000 | 2,274,700,000 | 1,690.0 miles (2,719.8 km) |
| 2022 | 3,645,700,000 | 2,602,700,000 | 1,624.6 miles (2,614.5 km) |
| 2023 | 3,710,900,000 | 2,672,100,000 | 1,630.0 miles (2,623.2 km) |