M177 AMG vs OM654

Side-by-side reliability comparison

Higher reliability score
OM654 BEST 85/100
+20 points over M177 AMG
0 / 100
CAUTION M177 AMG Mercedes-Benz
0 / 100
BEST OM654 Mercedes-Benz

Specifications

M177 AMG
OM654
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
CAUTION
BEST
Reliability
65
85
Years
2014--present
2016--present
Displacement
3982 cc
1950 cc
Layout
V8
I4
Type
Petrol Turbo
Diesel
Power
476--630 hp
150--245 hp
Known Issues
3
2
Total Risk Cost
€2,600--€6,400
€500--€1,500

Character

M177 AMG

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

OM654

"Best modern MB diesel. Aluminium block, low friction. Long-distance champion."

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

OM654 2

○ MINOR
DPF — better than older MB diesels but still diesel €300--€1,000 80,000 km--150,000 km
○ MINOR
Minor EGR fouling (best-in-class but not immune) €200--€500 100,000 km--180,000 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

OM654 47

B-Class W246 2012--2018 A-Class W176 2012--2018 GLA X156 2014--2020 A-Class W176 2016--2018 C-Class W205 2017--2018 C-Class W205 2018--2021 GLC X253 2019--2022 E-Class W213 2016--2023 GLC X253 2019--2022 E-Class W213 2016--2023 GLE W167 2019--present E-Class W213 2018--2023 C-Class W205 2018--2021 C-Class W205 2018--2021 GLC X253 2019--2022 GLC X254 2022--present E-Class W214 2024--present C-Class W206 2021--present E-Class W214 2024--present GLC X254 2022--present C-Class W206 2021--present C-Class W206 2021--present GLC X254 2022--present E-Class W214 2024--present CLA C118 2019--present A-Class W177 2019--2025 CLA C118 2019--present B-Class W247 2019--2023 GLA H247 2020--present GLA H247 2020--present A-Class W177 2018--2025 E-Class W213 2018--2023 S-Class W222 2018--2020 GLE W167 2019--present E-Class W213 2018--2023 G-Class W463 2nd 2018--present E-Class W214 2024--present G-Class W463 2nd 2019--present G-Class W463 2nd 2024--present S-Class W222 2018--2020 S-Class W222 2017--2020 S-Class W223 2020--present GLE W167 2019--present S-Class W223 2020--present C 220d Wagon S205 2014--2021 Wagon E 220d Wagon S213 2016--2024 Wagon GLC 220d Coupe C253 2016--2023 SUV
Full M177 AMG Report Full OM654 Report