2018 e400 Coupe, reliable?? Should I buy it?? 🤔
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2018 e400 Coupe, reliable?? Should I buy it?? 🤔
Hey guys my brother-in-law has a 2018 MB e400 Coupe with 107 Mi on it, no OBD codes never been wrecked runs flawlessly!
Is this V6 twin turbo engine reliable anything to look out in the future for this car? 🤔
thanks in advance 🙂
Is this V6 twin turbo engine reliable anything to look out in the future for this car? 🤔
thanks in advance 🙂
Last edited by Roman living; Jul 3, 2025 at 10:44 PM.
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2017 GLE350 4MATIC
Yes the engine is one of the most reliable MB engines in the past 25 years. Arguably the only reliable engine since the M113 non-K.
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yeah I've been buying Mercedes since the early '90s I just don't like all these turbos I've mostly stayed with the E-Class and my 2012 E350 I thought was the perfect engine no turbo 302 horsepower direct injection not sure why Mercedes had to put turbos in cars when you had that much horsepower and still I was getting 22 City and 30 in Highway!
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The only concern would probably be oil in harness and camshaft adjuster and valve cover gasket and.. and... that's it : )
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2019 E300
yeah I've been buying Mercedes since the early '90s I just don't like all these turbos I've mostly stayed with the E-Class and my 2012 E350 I thought was the perfect engine no turbo 302 horsepower direct injection not sure why Mercedes had to put turbos in cars when you had that much horsepower and still I was getting 22 City and 30 in Highway!
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Smaller turbo engine is cheaper to make than big NA engines, gas milage is better with the smaller turbo especially if you like to push the gas. That V6 in the 2018 E400 is solid, sounds like you know your way under the hood, a must when taking on a 100K miles German luxury car with no extended warranty. The rest of the car is average in reliability at best.
Last edited by Roman living; Jul 6, 2025 at 11:07 AM.
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yeah definitely but I really like to see Mercedes go back to naturally aspirated engines in my opinion the W212 V6 was one of the best engines ever built! I had a 2012 E350 and I sold it with a little over 130k miles, no carbon buildup the engine was clean as a whistle
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The whole auto industry is going to smaller turbos, hybrid and electric, the big NA engines are a thing of the pass. My brother in law had a 2014 E350, I drove it quite a few times, it does not compare to the V6 turbo performance wise, reliability wise, it will have less issues. If reliability was on top of priority, I would have a Japanese luxury in my driveway instead of German.
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2019 E300
Turbo spins at over 100,000 rpm, anything that spins that fast will eventually fail. Todays turbo are smaller to spool up faster, so they spin even faster.
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From: Long Island, New York
2018 E400 4matic Wagon
We have a 2018 E400 wagon and it has been the most reliable car we've ever had. It's now over 7 years old with 37k miles, and it' only been in for warranty repair once (a problem with the power drivers' seat). We've done all required maintenance, including changing the transmission fluid and differential fluid. Servicing the car by the book is key. Check maintenace records. Make sure the oil and brake fluid were changed as specified by the manufacturer.
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W214 E450
We have a 2018 E400 wagon and it has been the most reliable car we've ever had. It's now over 7 years old with 37k miles, and it' only been in for warranty repair once (a problem with the power drivers' seat). We've done all required maintenance, including changing the transmission fluid and differential fluid. Servicing the car by the book is key. Check maintenace records. Make sure the oil and brake fluid were changed as specified by the manufacturer.
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There are exceptions, you will never find the lexus LFA boring for example. Even a miata could be fun at low speeds, there was a saying fun to drive a slow car fast than a fast car slow.
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On the topic of the turbo OP, we had quite a discussion on this one in your thread : ) https://mbworld.org/forums/e-class-w...-2-0-w213.html
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.
I've driven turbo equipped cars since the 1970's and never had a turbo issue. Back then I drove 50k-75k miles per year and traded each car every 6 years. IMO Mercedes E class cars are rugged taxis masquerading as consumer vehicles.
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2018 E400 4matic Wagon
Agreed that regular maintenance is critical to a long lasting car. Yours however is barely past the break-in period with only 37K miles. I have just over 13K in 10 months. I don't think you can legitimately call a car reliable unless it has given you at least 100K problem free miles. I had 170K on my 2012 E350 and would have kept driving it for thousands more had I not totaled it last year. That car was reliable and never broke down once or needed any mechanical repairs. Loved that car. The last 7 years of ownership was without a warranty and I was never concerned. I have no doubt it would have gone at least another 70K or more without an issue. I'm hoping I'll get at least 200K from the W214 E450 before it gives up the ghost. To that end and because it's a turbo, it's oil changes every 5K rather than to go with the recommended 10K.
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Good times, back then there were turbo timers.
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OP, if you want a naturally aspirated new vehicle in 2025 and 2026 (?) you will need to look elsewhere, outside the luxury segment, mazda for example with the newly revealed 2026 CX-5 does not have a turbocharger and sadly very underpowered. The previous generation I heard has the option of having a turbocharged variant but for some reason this new generation comes only in NA form, how is that for a change 
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Hey L1Wolf long time no see! 
Thought I would share with you my new YouTube channel! Some Benz stuff!
https://www.youtube.com/@NatterFact
Thought I would share with you my new YouTube channel! Some Benz stuff!
https://www.youtube.com/@NatterFact
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Hey ua549
Thought I would share with you my new YouTube channel! Some Benz stuff!
https://www.youtube.com/@NatterFact
Thought I would share with you my new YouTube channel! Some Benz stuff!
https://www.youtube.com/@NatterFact
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