Warranty Direct lists UK’s least reliable engines, Audi, BMW and VW among 10 worst image

Warranty Direct, the UK’s leading supplier of direct consumer warranties, found Honda as the most reliable engine maker, while MG Rover topped the list of least engine manufacturer.

Surprisingly, the Bottom 10 Manufacturers list include three German brands: Audi, BMW and Volkswagen. Warranty Direct studied data from 50,000 live consumer policies which showed that the only engines to have failed more often than Audis in the past year were those from the now defunct MG Rover group, while the MINI finished a disappointing third from bottom. BMW and Volkswagen featured seventh and ninth from respectively in the power plant scale of shame.

At the top end of the table, Japan took the honors as Honda and Toyota proved to be the manufacturers with the most reliable power units. Mercedes-Benz was the only German manufacturer that made to the Top 10 Manufacturers list, taking 3rd place.

Engine repairs are usually the most expensive repairs, with 1 in 13 MG Rover motors failing in the past year, while 1 in 27 Audi owners had issues with theirs. For instance, an engine failure on a Range Rover Vogue recently led to Warranty Direct’s highest claim – £12,998.46 – while one dealer quoted £14,853.60 to repair an engine on a Range Rover Sport after it failed catastrophically.

At the opposite end of the scale, just 1 in every 345 Honda owners had a problem with their power unit.