M266 vs OM606

Side-by-side reliability comparison

Higher reliability score
OM606 BEST 96/100
+34 points over M266
0 / 100
CAUTION M266 Mercedes-Benz
0 / 100
BEST OM606 Mercedes-Benz

Specifications

M266
OM606
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
CAUTION
BEST
Reliability
62
96
Years
2005--2011
1993--2001
Displacement
2034 cc
2996 cc
Layout
I4
I6
Type
Petrol Na
Diesel
Power
116--193 hp
134--174 hp
Known Issues
1
2
Total Risk Cost
€800--€2,000
€280--€700

Character

M266

"W245 B-Class. Inclined engine (at 57°). Unusual design. Balance shaft chain can break. Oil leaks. CVT gearbox issues (not engine). Turbo version (B200T) more troublesome."

OM606

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

Issues Comparison

M266 1

▲ HIGH
Balance shaft chain failure €800--€2,000 80,000 km--150,000 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

M266 2

A-Class W169 2004--2012 A-Class W169 2005--2012

OM606 2

300D W124 1993--1997 Sedan E 300D W210 1995--2003 Sedan
Full M266 Report Full OM606 Report