M266 vs OM648

Side-by-side reliability comparison

Higher reliability score
OM648 BEST 90/100
+28 points over M266
0 / 100
CAUTION M266 Mercedes-Benz
0 / 100
BEST OM648 Mercedes-Benz

Specifications

M266
OM648
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
CAUTION
BEST
Reliability
62
90
Years
2005--2011
2002--2006
Displacement
2034 cc
3222 cc
Layout
I4
I6
Type
Petrol Na
Diesel
Power
116--193 hp
204 hp
Known Issues
1
2
Total Risk Cost
€800--€2,000
€450--€1,100

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."

OM648

"Modern OM606 successor. Excellent highway cruiser. Strong torque."

Issues Comparison

M266 1

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

OM648 2

● MODERATE
EGR valve fouling (city use) €300--€700 80,000 km--160,000 km
○ MINOR
Glow plugs + injector seals €150--€400 80,000 km--160,000 km

Models

M266 2

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

OM648 6

E-Class W210 1999--2002 C-Class W203 2001--2005 E-Class W210 1999--2002 S-Class W220 1999--2002 S-Class W220 2002--2005 E 320 CDI W211 2002--2009 Sedan
Full M266 Report Full OM648 Report