B6304T vs VEP4 B5/B6 MHEV
Side-by-side reliability comparison
Higher reliability score
VEP4 B5/B6 MHEV
ACCEPTABLE
74/100
+4 points over B6304T
0
/ 100
ACCEPTABLE
B6304T
Volvo
0
/ 100
ACCEPTABLE
VEP4 B5/B6 MHEV
Volvo
Specifications
B6304T
VEP4 B5/B6 MHEV
Brand
Volvo
Volvo
Verdict
ACCEPTABLE
ACCEPTABLE
Reliability
70
74
Years
2010--2016
2020--present
Displacement
2953 cc
1969 cc
Layout
I6
I4
Type
Petrol Turbo
Petrol Turbo
Power
286--350 hp
250--300 hp
Known Issues
1
2
Total Risk Cost
€400--€800
€1,200--€2,400
Character
B6304T
"S60/V60/XC90 T6 (later). Twin-scroll turbo. More refined than B6294T. Timing belt. PCV. Same concerns but slightly improved. Polestar version 350hp."
VEP4 B5/B6 MHEV
"Mild hybrid twin-charged four. 48V system. Replaces T5/T6 naming. Smooth, efficient. Early data positive."
Issues Comparison
B6304T 1
▲ HIGH
Timing belt
VEP4 B5/B6 MHEV 2
● MODERATE
48V MHEV battery / belt starter-generator
○ MINOR
Timing chain (low concern, modern)