M276 vs OM656

Side-by-side reliability comparison

Higher reliability score
OM656 BUY 82/100
+4 points over M276
0 / 100
BUY M276 Mercedes-Benz
0 / 100
BUY OM656 Mercedes-Benz

Specifications

M276
OM656
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
BUY
BUY
Reliability
78
82
Years
2010--2019
2017--present
Displacement
3498 cc
2999 cc
Layout
V6
I6
Type
Petrol Turbo
Diesel
Power
272--333 hp
243--330 hp
Known Issues
3
2
Total Risk Cost
€1,000--€2,400
€500--€2,000

Character

M276

"Refined M272 successor. Direct injection. 200k+ km with care."

OM656

"Flagship modern MB diesel. Inline-6 smoothness returns. MHEV. GLE/GLS/S-Class. Excellent highway. Early data strong."

Issues Comparison

M276 3

● MODERATE
Timing chain tensioner / camshaft adjuster €500--€1,200 100,000 km--170,000 km
○ MINOR
Spark plugs + ignition coils €300--€700 80,000 km--150,000 km
○ MINOR
Valve cover / cam cover oil leaks €200--€500 100,000 km--200,000 km

OM656 2

● MODERATE
DPF + EGR — diesel city driving concern €400--€1,200 60,000 km--120,000 km
○ MINOR
AdBlue / SCR system consumption and faults €100--€800 30,000 km--∞

Models

M276 22

G-Class W463 2nd 2018--2024 SL R232 2022--present SL R232 2022--present S-Class W222 2017--2020 S-Class W223 2020--present SLK R172 2016--2020 GLE W166 2016--2019 GLC X253 2016--2019 GLC X253 2019--2022 C-Class W205 2018--2021 S-Class W222 2017--2020 C-Class W205 2016--2018 S-Class W222 2013--2017 SL R231 2012--2020 E-Class W212 2012--2016 GLK X204 2012--2015 E-Class W212 2013--2016 SLK R172 2011--2016 GLE W166 2015--2019 C-Class W204 2011--2014 E-Class W213 2017--2020 E-Class W212 2013--2016

OM656 3

E 400d W213 2016--2024 Sedan GLE 350d W166 2015--2019 SUV S 350d W222 2013--2020 Sedan
Full M276 Report Full OM656 Report