OM608 vs M104

Side-by-side reliability comparison

Higher reliability score
M104 BEST 85/100
+13 points over OM608
0 / 100
ACCEPTABLE OM608 Mercedes-Benz
0 / 100
BEST M104 Mercedes-Benz

Specifications

OM608
M104
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
ACCEPTABLE
BEST
Reliability
72
85
Years
2018--present
1990--1997
Displacement
1461 cc
3199 cc
Layout
I4
I6
Type
Diesel
Petrol Na
Power
116 hp
193--231 hp
Known Issues
1
1
Total Risk Cost
€300--€600
€500--€2,000

Character

OM608

"W177 A-Class, W247 B-Class. Renault K9K sourced and rebadged. Same proven diesel. DPF standard. Timing belt (same K9K belt concerns). Well-understood engine under a Mercedes badge."

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

OM608 1

▲ HIGH
Timing belt (K9K heritage) €300--€600 60,000 km--90,000 km

M104 1

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

Models

OM608 2

A-Class W177 2018--2025 B-Class W247 2019--2023

M104 0

No models listed.

Full OM608 Report Full M104 Report