M264 vs OM656

Side-by-side reliability comparison

Higher reliability score
OM656 BUY 82/100
+4 points over M264
0 / 100
BUY M264 Mercedes-Benz
0 / 100
BUY OM656 Mercedes-Benz

Specifications

M264
OM656
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
BUY
BUY
Reliability
78
82
Years
2017--present
2017--present
Displacement
1991 cc
2999 cc
Layout
I4
I6
Type
Petrol Turbo
Diesel
Power
184--258 hp
243--330 hp
Known Issues
2
2
Total Risk Cost
€750--€2,500
€500--€2,000

Character

M264

"M274 evolution with 48V mild hybrid. More refined, fewer known issues."

OM656

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

Issues Comparison

M264 2

● MODERATE
Thermostat failure (inherited from M274) €250--€500 60,000 km--130,000 km
● MODERATE
EQ Boost 48V mild hybrid system complexity €500--€2,000 80,000 km--150,000 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

M264 12

E-Class W214 2024--present C-Class W206 2021--present GLC X254 2022--present E-Class W214 2024--present E-Class W213 2019--2023 C-Class W205 2018--2021 GLC X253 2019--2022 E-Class W213 2020--2023 C-Class W205 2018--2021 C-Class W205 2018--2021 A 250 W177 2018--2024 Hatchback E 200 Wagon S213 2016--2024 Wagon

OM656 3

E 400d W213 2016--2024 Sedan GLE 350d W166 2015--2019 SUV S 350d W222 2013--2020 Sedan
Full M264 Report Full OM656 Report