Spare or repair. Please read add before contacting me Mercedes E Class E220 Cdi Blueefficiency 7G-Tronic Auto 4 months mot part service history. Mileage 151000 black leather interior Its got problem with engine. The engine knocking Still Start and drives but it need to be towed away as knocking noise from engine. I don't know what is wrong with it As don't have time to repair it. So selling as spare repair