Devon is an English County.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 4,289,700,000 | 3,434,800,000 | 8,002.6 miles (12,879.0 km) |
| 2001 | 4,405,200,000 | 3,529,500,000 | 8,014.8 miles (12,898.6 km) |
| 2002 | 4,569,800,000 | 3,674,200,000 | 8,026.8 miles (12,917.9 km) |
| 2003 | 4,611,900,000 | 3,701,500,000 | 8,039.3 miles (12,937.9 km) |
| 2004 | 4,753,100,000 | 3,795,000,000 | 8,049.5 miles (12,954.4 km) |
| 2005 | 4,861,600,000 | 3,864,700,000 | 8,049.7 miles (12,954.7 km) |
| 2006 | 4,916,200,000 | 3,899,600,000 | 8,155.0 miles (13,124.2 km) |
| 2007 | 4,917,100,000 | 3,860,500,000 | 8,161.2 miles (13,134.2 km) |
| 2008 | 5,025,100,000 | 3,964,900,000 | 8,139.3 miles (13,099.0 km) |
| 2009 | 5,022,800,000 | 3,990,300,000 | 8,111.8 miles (13,054.7 km) |
| 2010 | 4,992,500,000 | 3,956,300,000 | 8,094.2 miles (13,026.4 km) |
| 2011 | 4,978,000,000 | 3,931,000,000 | 8,089.6 miles (13,019.0 km) |
| 2012 | 4,983,300,000 | 3,918,100,000 | 8,093.6 miles (13,025.4 km) |
| 2013 | 5,050,500,000 | 3,971,600,000 | 8,100.6 miles (13,036.6 km) |
| 2014 | 5,201,300,000 | 4,068,500,000 | 8,100.6 miles (13,036.6 km) |
| 2015 | 5,290,900,000 | 4,102,600,000 | 8,083.5 miles (13,009.1 km) |
| 2016 | 5,545,500,000 | 4,268,900,000 | 8,098.6 miles (13,033.4 km) |
| 2017 | 5,801,600,000 | 4,491,600,000 | 8,094.7 miles (13,027.2 km) |
| 2018 | 5,815,200,000 | 4,496,200,000 | 8,084.8 miles (13,011.3 km) |
| 2019 | 5,976,800,000 | 4,632,100,000 | 8,082.4 miles (13,007.4 km) |
| 2020 | 4,592,300,000 | 3,390,600,000 | 8,094.2 miles (13,026.3 km) |
| 2021 | 5,357,300,000 | 4,014,000,000 | 8,101.9 miles (13,038.7 km) |
| 2022 | 5,771,400,000 | 4,348,500,000 | 8,076.0 miles (12,997.0 km) |
| 2023 | 5,875,900,000 | 4,436,600,000 | 8,089.0 miles (13,018.0 km) |