A police officer was killed after his BMW flipped on the M6 due to a fault the manufacturer had known about for years.
PC Nicholas Dumphreys was responding to an incident where a man had been attacked by people armed with knives. But while racing down the motorway, a crankshaft bearing in his BMW 330 engine failed.
As oil spilled onto the carriageway, the car swerved and its tyres and engine ignited. PC Dumphreys tried to correct the swerve but 'there was nothing he could do' and his car flipped onto its roof, an inquest heard.