IsItAGoodCar
Reliability Guide

Common Problems with the
2021 Toyota Aygo Mk2

The final year of the Mk2 Aygo before it was replaced by the crossover-styled Aygo X. Late cars are excellent value as they offer the latest safety equipment and low running costs. Parts and dealer support remain strong, and the proven 1.0 engine is one of the most reliable city car powertrains available.

What changed for 2021

  • •Final production year before replacement by the Aygo X
  • •All models now include Toyota Safety Sense as standard

Common MOT watch-outs

  • !Age-related corrosion starting to appear on earlier 2014-2015 cars
  • !Water pump issues becoming more prominent on higher-mileage examples
3
Known Issues
0
Serious
2
Moderate
1
Minor

All Known Issues

Water Pump Leak

ModerateCooling System

The 1.0 three-cylinder engine on the Mk2 is still prone to weeping water pumps, with coolant loss and overheating risk if the leak is ignored.

Est. Repair Cost: £180–£350
Warning Signs:

Pink staining on engine block, Low coolant level

What to Inspect:
  • Visual check of the pump area
  • Look for pink coolant crust around the water pump
Verified by IsItAGoodCar Research TeamUpdated

Clutch Premature Wear

ModerateGearbox & Transmission

The clutch on the Mk2 can wear early, particularly on cars driven heavily in urban traffic or by learner drivers.

Est. Repair Cost: £350–£500
Warning Signs:

High biting point, Slipping under acceleration, Burning smell

What to Inspect:
  • Test the clutch bite point
  • Check for slipping in higher gears
Verified by IsItAGoodCar Research TeamUpdated

Front Brake Disc Corrosion

MinorBrakes

The front brake discs are known to corrode prematurely, leading to vibration and reduced braking performance.

Est. Repair Cost: £150–£300
Warning Signs:

Vibration under braking, Visible corrosion on disc surface, MOT advisory for disc condition

What to Inspect:
  • Inspect the front brake discs for scoring and corrosion
  • Feel for pulsing through the brake pedal
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2021 Toyota Aygo Mk2

  • Late 2021 cars offer the best equipment levels and lowest risk
  • Service at Toyota to activate the Relax warranty for up to 10 years of coverage
2019–2020
Check a 2021 Toyota Aygo Mk2 by Registration