M270 vs M104

Side-by-side reliability comparison

Higher reliability score
M104 BEST 85/100
+15 points over M270
0 / 100
ACCEPTABLE M270 Mercedes-Benz
0 / 100
BEST M104 Mercedes-Benz

Specifications

M270
M104
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
ACCEPTABLE
BEST
Reliability
70
85
Years
2012--2018
1990--1997
Displacement
1595 cc
3199 cc
Layout
I4
I6
Type
Petrol Turbo
Petrol Na
Power
122--218 hp
193--231 hp
Known Issues
3
1
Total Risk Cost
€1,400--€3,100
€500--€2,000

Character

M270

"Transverse M274. Solid compact MB. Chain lifespan ~130k km."

M104

"W124/R129/W140 inline-6. One of Mercedes' most reliable engines. Bulletproof bottom end. Wiring harness biodegrades (uses soy-based insulation). Head gasket solid. 400k+ km possible."

Issues Comparison

M270 3

● MODERATE
Camshaft actuator / solenoid noise €300--€700 80,000 km--150,000 km
● MODERATE
Timing chain stretch at ~130k km €800--€1,800 100,000 km--160,000 km
○ MINOR
Intake carbon buildup (DI) €300--€600 80,000 km--150,000 km

M104 1

▲ HIGH
Wiring harness biodegradation €500--€2,000 100,000 km--200,000 km

Models

M270 28

GLC X254 2022--present C-Class W206 2021--present C-Class W206 2021--present CLA C118 2019--present A-Class W177 2019--2025 A-Class W177 2018--2025 CLA C118 2019--present GLA H247 2020--present GLA H247 2020--present B-Class W246 2011--2018 CLA C117 2013--2019 CLA C117 2013--2019 GLA X156 2014--2020 A-Class W176 2012--2018 GLA X156 2014--2020 A-Class W176 2016--2018 B-Class W246 2011--2018 A-Class W176 2012--2018 A-Class W176 2012--2018 CLA C117 2013--2019 GLA X156 2014--2020 GLA H247 2020--present B-Class W247 2019--2023 CLA C118 2019--present A-Class W177 2018--2025 A-Class W177 2018--2025 CLA C118 2019--present B-Class W247 2019--2023

M104 0

No models listed.

Full M270 Report Full M104 Report