Merton is an English London Borough.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 428,000,000 | 358,100,000 | 230.0 miles (370.1 km) |
| 2001 | 434,700,000 | 362,300,000 | 230.5 miles (371.0 km) |
| 2002 | 433,400,000 | 359,800,000 | 231.2 miles (372.0 km) |
| 2003 | 429,200,000 | 349,000,000 | 231.7 miles (372.9 km) |
| 2004 | 432,000,000 | 350,800,000 | 231.7 miles (372.9 km) |
| 2005 | 432,900,000 | 350,800,000 | 231.8 miles (373.0 km) |
| 2006 | 436,800,000 | 353,300,000 | 230.8 miles (371.4 km) |
| 2007 | 439,300,000 | 351,500,000 | 230.7 miles (371.3 km) |
| 2008 | 436,400,000 | 350,600,000 | 231.5 miles (372.6 km) |
| 2009 | 429,200,000 | 348,000,000 | 232.6 miles (374.3 km) |
| 2010 | 421,200,000 | 341,500,000 | 232.9 miles (374.8 km) |
| 2011 | 412,600,000 | 334,500,000 | 234.1 miles (376.7 km) |
| 2012 | 409,700,000 | 331,300,000 | 234.6 miles (377.5 km) |
| 2013 | 406,500,000 | 328,600,000 | 235.2 miles (378.4 km) |
| 2014 | 406,600,000 | 326,400,000 | 235.5 miles (379.0 km) |
| 2015 | 404,200,000 | 323,000,000 | 233.8 miles (376.2 km) |
| 2016 | 411,500,000 | 320,200,000 | 233.8 miles (376.2 km) |
| 2017 | 406,400,000 | 316,400,000 | 233.9 miles (376.4 km) |
| 2018 | 412,200,000 | 320,400,000 | 235.7 miles (379.3 km) |
| 2019 | 420,400,000 | 328,100,000 | 235.2 miles (378.6 km) |
| 2020 | 338,300,000 | 257,600,000 | 234.9 miles (378.0 km) |
| 2021 | 383,600,000 | 295,700,000 | 234.9 miles (378.0 km) |
| 2022 | 395,000,000 | 304,100,000 | 233.1 miles (375.1 km) |
| 2023 | 399,900,000 | 308,600,000 | 233.1 miles (375.1 km) |