The Government should scrap plans to change the frequency of MoT tests and concentrate on tightening up the current system, a watchdog has said.
What Car? visited six garages with a six-year-old Vauxhall Corsa that had recently failed its MoT.
Some of the garages failed to identify potentially dangerous problems with the car.
Four did not spot the chip on the windscreen or a broken clip on a brake pipe.
Meanwhile another in south-west London failed to pick-up a problem with the vehicle's track rod end ball joint.
Chas Hallett, What Car? editor called on the Government to scrap plans for biannual tests and concentrate on improving the current system.
A spokesman for the Vehicle and Operator Services Agency (VOSA) which runs the MoT system, said: "A number of your findings have caused VOSA some concern, which we will address with the garages involved."
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