Newport is a Welsh Unitary Authority.
| Year | All Motor Vehicles | Cars and Taxis | Road Network Total Length |
|---|---|---|---|
| 2000 | 1,036,300,000 | 828,300,000 | 448.4 miles (721.7 km) |
| 2001 | 1,056,700,000 | 845,700,000 | 449.4 miles (723.3 km) |
| 2002 | 1,082,800,000 | 870,000,000 | 449.3 miles (723.1 km) |
| 2003 | 1,095,600,000 | 873,700,000 | 450.3 miles (724.7 km) |
| 2004 | 1,127,200,000 | 895,100,000 | 451.7 miles (726.9 km) |
| 2005 | 1,103,600,000 | 873,200,000 | 454.9 miles (732.1 km) |
| 2006 | 1,109,100,000 | 874,700,000 | 447.8 miles (720.7 km) |
| 2007 | 1,101,000,000 | 867,800,000 | 449.6 miles (723.5 km) |
| 2008 | 1,108,300,000 | 874,100,000 | 450.3 miles (724.7 km) |
| 2009 | 1,079,700,000 | 861,600,000 | 454.4 miles (731.3 km) |
| 2010 | 1,067,300,000 | 843,300,000 | 454.4 miles (731.2 km) |
| 2011 | 1,098,300,000 | 873,500,000 | 455.4 miles (732.9 km) |
| 2012 | 1,090,800,000 | 867,100,000 | 457.1 miles (735.6 km) |
| 2013 | 1,099,800,000 | 877,300,000 | 458.5 miles (737.9 km) |
| 2014 | 1,166,100,000 | 929,000,000 | 463.2 miles (745.5 km) |
| 2015 | 1,200,600,000 | 949,600,000 | 458.6 miles (738.1 km) |
| 2016 | 1,232,000,000 | 970,700,000 | 462.2 miles (743.9 km) |
| 2017 | 1,244,200,000 | 973,900,000 | 465.3 miles (748.8 km) |
| 2018 | 1,251,100,000 | 974,300,000 | 466.6 miles (751.0 km) |
| 2019 | 1,253,000,000 | 980,500,000 | 469.2 miles (755.1 km) |
| 2020 | 960,900,000 | 713,700,000 | 470.8 miles (757.7 km) |
| 2021 | 1,085,200,000 | 806,500,000 | 471.9 miles (759.4 km) |
| 2022 | 1,197,400,000 | 908,100,000 | 473.5 miles (762.0 km) |
| 2023 | 1,219,900,000 | 931,200,000 | 475.1 miles (764.6 km) |