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Toyota Aygo and Suzuki Swift top Warrantywise reliability ranking for used superminis

Warrantywise’s index uses repair frequency, vehicle age, mileage, labour time to reveal which models deliver decade-long fault-free performance in a market where superminis account for almost a third of used sales

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Overview

  • Toyota Aygo and Suzuki Swift share the highest reliability score of 88.6 in the latest index
  • Superminis made up 32.3% of UK used-car sales in 2024, cementing their dominance in the second-hand market
  • Average repair bills for top-ranked superminis range from £420 to £1,118, with some complex faults costing up to £9,224
  • More than 60% of the ten best models showed no faults until at least eight years of age, underscoring long-term durability
  • Electrical faults account for over half of all repair requests, while engine issues represent just over 30% of reported problems