For two years, my Mercedes has been more than just a car; it’s been a reliable companion. Now boasting 133,000 miles, it’s a testament to enduring quality. Like any vehicle of this age, it’s had its moments, but with a DIY approach (and the advantage of a lift!), I’ve tackled most challenges myself, with the exception of the SBC system. In my experience, the issues encountered are more reflective of typical wear and tear associated with age, rather than any inherent flaw in Mercedes engineering.
Over time, I’ve proactively addressed several maintenance points, ensuring optimal performance. This includes replacing the glow plug module, a slightly tricky task due to its location. While not strictly necessary at the time, I also replaced all glow plugs as preventative maintenance, a straightforward job with a torque wrench. Other replacements include the oil level sensor, transmission fluid during a filter change, front and rear brakes, and front suspension components, where torn rubber bushings were the culprit. The suspension work, while time-consuming, wasn’t overly complicated, and I highly recommend replacing both ball joints simultaneously for a comprehensive refresh. Further maintenance included a new transmission mount and intercooler seals. More recently, the starter motor was replaced, and the SBC system was addressed by a dealer when a warning light appeared – troubleshooting led me to conclude professional attention was necessary for this complex system.
Looking ahead, I plan to enhance the 722.6 transmission with Sonnax parts to improve cold-weather shifting, which can be a bit sluggish during winter months.
Despite these maintenance tasks, the car delivers on key fronts. It’s surprisingly quick, the air conditioning is excellent, and fuel economy is respectable. For both long road trips and daily commutes, the comfort is outstanding; it truly glides smoothly on the road. My main critique is the outdated MOST system. A dependable Bluetooth solution is definitely on my wish list, as the auxiliary cable in the glove box feels like an antiquated workaround.
My history with Mercedes extends further back, having owned a W124 300D from 1992. That car was exceptionally robust and well-built. While its air conditioning wasn’t ideal for the Texas heat, it was a fantastic vehicle that my father still owns today, with over 350,000 miles on the odometer. He also relies on a 2006 CDI as his daily driver, with a modest 89,000 miles – his second CDI, as the first was unfortunately totaled.
While newer diesel models (2007+) have crossed my mind, emissions concerns have held me back. My 2007 5.9 Cummins, with 261,000 miles, is perhaps the most reliable vehicle I’ve ever owned and is remarkably easy to work on compared to the Mercedes, thanks to its spacious engine bay. However, comparing a Cummins to a Mercedes isn’t truly fair. I also find the E250 and the roomier X5d appealing alternatives.
Ultimately, my experience underscores the enduring appeal of Mercedes-Benz. While older models require attentive maintenance, the rewards are significant: a comfortable, capable, and enjoyable driving experience that stands the test of time. For those willing to engage in DIY maintenance and appreciate classic automotive engineering, owning a Mercedes can indeed be a very rewarding experience.
