Some of the last MG Rovers built in the UK have suffered from a raft of mechanical problems, according to independent automotive warranty provider, Warranty Direct.

The firm said an estimated one in five cars produced during the last three years by the now-defunct British automaker have been plagued by manufacturing faults.

The most problematic area is electrics, which account for 29% of all failures. Owners have regularly complained of illuminating warning lights, malfunctioning fans and window motors and even one case where the horn and wipers were activated by pressing an electric window switch, Warranty Direct claimed.

Transmission failure accounts for 25% of reported breakdowns. Although the average cost of repair is£279, some owners have been forced to pay up to £3,872 to get their new car back on the road.

Comparative research by Warranty Direct showed that newer Rovers have suffered from six times as many problems in their fuel systems than models aged four to six years old, potentially a costly repair.

MG Rover collapsed last April leaving an estimated 150,000 owners without manufacturer or dealer-backed warranty protection.