M177 AMG vs OM606

Side-by-side reliability comparison

Higher reliability score
OM606 BEST 96/100
+31 points over M177 AMG
0 / 100
CAUTION M177 AMG Mercedes-Benz
0 / 100
BEST OM606 Mercedes-Benz

Specifications

M177 AMG
OM606
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
CAUTION
BEST
Reliability
65
96
Years
2014--present
1993--2001
Displacement
3982 cc
2996 cc
Layout
V8
I6
Type
Petrol Turbo
Diesel
Power
476--630 hp
134--174 hp
Known Issues
3
2
Total Risk Cost
€2,600--€6,400
€280--€700

Character

M177 AMG

"Handcrafted AMG V8. Massive power. AMG-level care needed. Expensive when wrong."

OM606

"Legendary. 500k+ miles documented. Tunable to 500hp. One of most reliable engines ever."

Issues Comparison

M177 AMG 3

◆ CRITICAL
Head bolt failure — early C63 (W205) €2,000--€5,000 0 km--60,000 km
▲ HIGH
Oil degradation — M-car intervals critical €200--€500 0 km--∞
● MODERATE
Intake carbon buildup (direct injection) €400--€900 60,000 km--120,000 km

OM606 2

○ MINOR
Glow plug failure (only meaningful issue) €80--€200 80,000 km--∞
○ MINOR
Injection pump seal wear (age-related) €200--€500 200,000 km--∞

Models

M177 AMG 31

GLA X156 2014--2020 CLA C117 2013--2019 A-Class W176 2013--2015 A-Class W176 2016--2018 CLA C118 2020--present A-Class W177 2020--2025 GLA H247 2020--present SL R232 2022--present GLC X254 2023--present C-Class W206 2022--present C-Class W206 2023--present GLC X254 2023--present E-Class W214 2025--present S-Class W223 2023--present SL R231 2012--2020 GLE W166 2015--2019 S-Class W222 2013--2017 E-Class W212 2011--2016 G-Class W463 2012--2018 S-Class W221 2011--2013 C-Class W205 2015--2021 AMG GT X290 2019--2023 GLC X253 2018--2022 G-Class W463 2nd 2018--present C-Class W205 2015--2021 E-Class W213 2017--2023 AMG GT X290 2019--2023 GLE W167 2020--present AMG GT C190 2015--2021 AMG GT C190 2014--2021 AMG GT C190 2017--2021

OM606 2

300D W124 1993--1997 Sedan E 300D W210 1995--2003 Sedan
Full M177 AMG Report Full OM606 Report