Milton Keynes is an English Unitary Authority.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 1,438,200,000 | 1,193,100,000 | 718.7 miles (1,156.6 km) |
| 2001 | 1,463,400,000 | 1,209,200,000 | 720.2 miles (1,159.1 km) |
| 2002 | 1,454,700,000 | 1,201,000,000 | 722.0 miles (1,161.9 km) |
| 2003 | 1,441,600,000 | 1,185,100,000 | 723.6 miles (1,164.6 km) |
| 2004 | 1,426,100,000 | 1,158,800,000 | 726.8 miles (1,169.7 km) |
| 2005 | 1,410,200,000 | 1,140,700,000 | 729.9 miles (1,174.7 km) |
| 2006 | 1,401,900,000 | 1,136,200,000 | 728.0 miles (1,171.6 km) |
| 2007 | 1,402,500,000 | 1,130,100,000 | 738.2 miles (1,188.0 km) |
| 2008 | 1,382,600,000 | 1,116,700,000 | 740.9 miles (1,192.3 km) |
| 2009 | 1,395,200,000 | 1,125,700,000 | 749.4 miles (1,206.0 km) |
| 2010 | 1,358,200,000 | 1,090,600,000 | 753.2 miles (1,212.2 km) |
| 2011 | 1,350,200,000 | 1,093,000,000 | 758.1 miles (1,220.0 km) |
| 2012 | 1,401,300,000 | 1,137,000,000 | 764.1 miles (1,229.8 km) |
| 2013 | 1,436,900,000 | 1,156,400,000 | 768.7 miles (1,237.2 km) |
| 2014 | 1,470,500,000 | 1,178,500,000 | 772.4 miles (1,243.0 km) |
| 2015 | 1,495,900,000 | 1,188,200,000 | 776.3 miles (1,249.3 km) |
| 2016 | 1,534,400,000 | 1,217,800,000 | 785.3 miles (1,263.8 km) |
| 2017 | 1,568,500,000 | 1,242,200,000 | 791.7 miles (1,274.0 km) |
| 2018 | 1,564,200,000 | 1,231,900,000 | 799.4 miles (1,286.5 km) |
| 2019 | 1,598,600,000 | 1,260,200,000 | 806.2 miles (1,297.5 km) |
| 2020 | 1,196,000,000 | 904,700,000 | 815.6 miles (1,312.6 km) |
| 2021 | 1,324,200,000 | 1,001,000,000 | 822.8 miles (1,324.2 km) |
| 2022 | 1,448,200,000 | 1,106,100,000 | 833.2 miles (1,341.0 km) |
| 2023 | 1,472,200,000 | 1,136,800,000 | 840.0 miles (1,351.9 km) |