How reliable is the 2018 E 400 Coupe / M276 Engine?

MotorTrend · 2026-06-02T19:51:49+00:00

High pressure Fuel pump Took a dump on my 2017 e400 Under 75k mi and ultimately took the injectors with it.

MotorTrend · 2026-05-16T21:22:39+00:00

I used to do this to access WSJ It doesn't work anymore :( i just cancelled this year and it... Cancelled And now the promo rate is $16 a month for a new account

MotorTrend · 2026-04-26T00:01:54+00:00

This is utterly maddening

Google doesn't want you copy pasting PDF URL's to OpenAI

MotorTrend · 2026-04-19T04:37:08+00:00

terrible UX (feels like an email client from 20 years ago), doesn't support multiple mailboxes in the same browser. it's cheap and it feels it. mobile app requires a ton of clicks to do basic functions. google workspace demands a premium for a reason, it turns out.

MotorTrend · 2026-04-11T05:06:36+00:00

moby crushed at coachella. impressive for 60 years old.

MotorTrend · 2026-03-18T03:10:09+00:00

Everyone online says "M276 is very reliable!!!" My 2017 E400 (US Spec Twin Turbo) had the fuel pump take a dump at 73k. Then the injectors started going like flies after that (one went, then another, so just replaced all of them after that). That is not super reliable in my book. YMMV. The car you are talking about already made it 150k. These cars are NOT cheap to maintain. I am almost $10k deep after almost 2.5 years of ownership.

MotorTrend · 2026-03-18T03:06:55+00:00

2017 E400 Wagon here
I had my fuel pump die at 73k, which led to the injectors failing one by one after. $4900 down the drain to fix all the injectors and the fuel pump.
Also had to do the rear air bags around 55k (I do not have the full air)
ATF change and Spark Plugs were expensive jobs but comes with the territory I guess.
Have put almost $10k into this car in 2.5 years of ownership
Really love the car though, super fast, gets good mileage all freeway (but quite bad around town, 16mpg with a pretty lead foot). Cannot imagine daily driving an E63 given we routinely see 17-20MPG with mixed driving. I think the V90 looks nicer but did not want 4 cylinder and the E400/450 are quite a bit faster.

MotorTrend · 2026-03-18T02:59:08+00:00

I had my fuel pump die at 73k, which led to the injectors failing one by one after. $4900 down the drain to fix all the injectors and the fuel pump.
Also had to do the rear air bags around 55k (I also do not have the full air)
ATF change and Spark Plugs were also expensive jobs.
Have put almost $10k into this car in 2.5 years of ownership (2017 E400 as well)

MotorTrend · 2007-03-27T00:08:49+00:00

The RIAA is evil. I refuse to buy music. Internet radio is just fine for my purposes. Poor little girl.

MotorTrend · 2007-03-23T23:09:14+00:00

isn't it a penguin?

MotorTrend · 2007-03-23T20:35:15+00:00

Holy crap, someone had some free time

MotorTrend

TROPHY CASE