I brought my 1998 Mercedes ML320 for maintenance service at German Car Specialists last month. In addition to the service, they did a thorough inspection of my car and informed me that the charcoal canister shut off valve, and the transfer case assembly and actuator motor need to be replaced. Adam said a new transfer case assembly and actuator motor from Germany will be very expensive, and he suggested to use a used one. All the parts came after about 4 weeks, and the said parts were removed and replaced. Adam explained the involved services very clearly orally and on paper. They also removed and replaced the automatic transmission shifter linkage front bushing without charge. My ML320 has nearly 140,000 miles, and, with the services from German Car Specialists, I am confident that my car has a long way to go. I recommend German Car Specialists because they provide reliable services at reasonable prices.