Most and least reliable cars with the lowest / highest repair costs long-term, age 3-15 years, data from a warranty provider, they know exactly how much they pay for each model and what issues they pay for:

Posted by mgobla@reddit | cars | View on Reddit | 24 comments

For scoring additionally to repair costs they also scored

  1. Repair request frequency
  2. Average labour hours for repairs
  3. Average vehicle age at repair
  4. Average vehicle mileage at the time of required repairs.

Most reliable: Top 10 most reliable used vehicles for 2026 | Warrantywise

Btw Peugeot 108 and Citroen C1 are a rebadged Toyota Aygo.

Least reliable: Used cars with lower reliability scores 2026 | Warrantywise