My son has a 2007 Ford Focus with 36,000 miles on the clock. A few months ago the oil light came on and oil leaked everywhere. The car was towed to a Ford garage where it has been serviced annually and the car has been diagnosed with an engine seizure. They say the cost to repair the engine is £3600 and the car us worth around £550. This all seems extremely unfair, can we claim against Ford at the service or the parts were faulty?