Aygo
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Which Toyota Aygo engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Toyota Aygo engine is the most reliable?
1.0 (1KR-FE) — Reliable verdict. The 1.0 VVT-i (1KR-FE — the legendary little Toyota three-cylinder, the same engine that powers the Aygo/107/108/C1 trio and turns up in the Yaris) is one of the most dependable engines in this whole catalogue: chain-driven, port-injected, no turbo and famously frugal and long-lived. It's slow, especially loaded or on hills, and three-cylinder-thrummy, but mechanically it just keeps going. The one historical caution is an early-life coolant/exhaust-stud niggle on some very early 1KR units, long since sorted. The honest, bulletproof city-car engine — buy on basic history and enjoy near-zero running costs.
Which Toyota Aygo engines should you avoid?
None of the Toyota Aygo engines listed are rated "Problematic" or "Avoid" — but always check the service history before buying.
What are the most common Toyota Aygo problems?
The most commonly reported problems across all Toyota Aygo generations and engines: EGR / injectors, Water pump coolant weep, Mild oil use (high miles), Engine mount / 3-cyl vibration, Oil consumption if service intervals were stretched.