Both the KIA RIO and the MERCEDES CLA CLASS are tracked here from official DVLA licensing data, and as of 2026 Q2 there are 100,660 KIA RIOs versus 111,655 MERCEDES CLA CLASSs still on UK roads. The KIA RIO is marginally rarer, but the two are closely matched on survivor numbers. Year on year their fortunes diverge: the KIA RIO is falling (-3.9%) while the MERCEDES CLA CLASS is rising (+5.0%).
| KIA RIO | MERCEDES CLA CLASS | |
|---|---|---|
| Left in the UK (2026 Q2) | 100,660 | 111,655 |
| Rarity tier | Common | Common |
| Licensed | 96,283 | 109,127 |
| SORN (off-road) | 4,377 | 2,528 |
| Peak | 111,269 (2023 Q2) | 111,655 (2026 Q2) |
| Year-on-year | ▼ 4,057 (-3.9%) yr/yr | ▲ 5,267 (+5.0%) yr/yr |
The KIA RIO is rarer: 100,660 are left in the UK as of 2026 Q2, compared with 111,655 of the MERCEDES CLA CLASS.
As of 2026 Q2 there are 100,660 KIA RIO and 111,655 MERCEDES CLA CLASS still registered (taxed or SORN) in the UK, according to DVLA data.