Our 37,000 mile, 2008 plate, Range Rover Sport has had a 'transmission fault' warning come up a few times. My local dealer did a diagnostic test which showed problem with fifth gear. They suggest new gearbox at £5500, or trade in for £15,000 against a new one.

The car also needs a major service costing £1000, as well as new rear brake pads and around £1000 of bodywork. We like the car but don't want to spend so much. Should we keep it or cut our losses?