Mercedes-Benz GL420 CDI 4.0 V8 Diesel | 306 PS | 4WD | 7 Seats | G-Tronic For sale is this lovely Mercedes-Benz GL420 CDI 4.0 V8 Diesel, producing 306 PS, with an automatic G-Tronic gearbox and 4WD. Registered in 2009, with only 3 former keepers from new. The car has recently been serviced and is sitting on 19" alloy wheels with good tyres. Please note: the vehicle currently has an intermittent boost/turbo issue. The turbo system works normally when the car is started, but after driving and stopping it can sometimes lose boost. Switching the engine off and restarting restores the boost again. I believe this may be a relatively minor issue, but I have not had the time to have it properly diagnosed or repaired, so the vehicle is being sold with this issue fully disclosed and reflected in the price. The engine starts and runs well, and the gearbox operates smoothly. No unusual knocks or noises. The vehicle has some age-related marks, as expected for a 2009 vehicle. 2 keys. PSH