Left side boost tube blown twice on my vehicle. Technical part info: 204-528-00-00, Charge Air Hose Both incidents involved sudden loss of power in the middle of the free way driving. First incident: Christmas Day 2018, on the way to Las Vegas from Grand Canyon visit, on highway 93. Fortunately, no vehicle was behind when I lost the power, moved to right lane and continued driving slowly to reach the hotel in LV (about 50 miles at low speeds). Check engine light came on immediately after loosing the power. Next day morning, visited the local Mercedes dealer to repair the vehicle, it costed me $520.19 This was in the middle of a long road trip from Phoenix to San Fransisco. Second incident: July 29th 2021, right after I picked up the vehicle from a repair shop to repair the rear bumper. Vehicle pick up was slow, no check engine light. Next day morning, on the way to work on I-17, vehicle lost the power while merging onto Freeway. Almost got hit a by trailer truck which was right behind me. Moved back to right lane and slowly drove to work. Check engine light came on after few minutes of driving. Took the vehicle to repair on August 6th to a local dealer. This time they didn't charge me for the repair and said it's covered under warranty. I don't have any warranty. Seems like it's a design issue with turbo charge air hose and/or a faulty part. It's a real safety issue if it blown in the middle of driving.

- Phoenix, AZ, USA

Blue tec system for diesel fuel emissions in my 2014 Mercedes Benz Glk250 model is inherently flawed with repeated failures that cause the car to "go limp" (unable to start after 10 or less starts when there is a failure in the blue tec system.) as a result, the car is not only unreliable, it is unsafe should the car "go limp" when needed for emergency or on a road trip or unable to drive out of an unsafe area, etc., since only a Mercedes Benz dealer can re-set the system after repairs so that the car will start again. To date (5/16/19) my 2014 Glk250 has 28,388 miles and has been returned to the dealer 6 times (first time, Dec. 6, 2014 and 5 more times since) due to the electronic warning message "10 remaining starts/add blue" which has always turned out to be an electronic failure in the blue tec system. The message may appear when the car is parked and the ignition is turned on or while driving. Sometimes, the check engine light may first appear followed by the "remaining starts" message a few days later. There is no logic or set sequence. And when it appears, there is no alternative but to immediately go to the dealer for repairs and to re-set the computer so the count down stops and the car can be started. The reason this is not a widely known problem is that there were not many glk 250 blue tec cars sold in the U.S. and Mercedes Benz no longer builds this model and has stopped offering diesel passenger cars in the U.S. for more information on complaints, see link.: https://mbworld.org/forums/glk-class-X204/517220-2014-Glk250-continued-issues-beware.html note: The date below is the start date of the blue tec problem for my car and the milage below was for the first time the car was taken to the dealer to fix the problem followed by 5 more times afterwards since 12/6/14

- Coral Gables, FL, USA