Ask the Expert: What is causing my Mercedes automatic to slip out of gear?
I have an elderly but lovely Mercedes-Benz E320 diesel estate with 140,000 miles. Recently, on two occasions, the automatic gearbox seemed to have slipped into neutral, not providing any drive. It only lasted a few moments and did not require breakdown recovery. Mechanics at my local garage seem baffled and suggested changing the gearbox oil; the cost could be £400-£500, which seems excessive if it does not solve the problem. Any ideas?