Engine Volvo B6294T

The 2.9-liter twin-turbo Volvo B6294T engine was produced by the company from 2001 to 2006 and was installed on the top modifications of the S80 sedan and XC90 SUV under the T6 index. This power unit is essentially a slightly updated version of the well-known B6284T motor.

The 6-cylinder Modular engine family includes: B6284T, B6294S and B6304S.

The engine was installed on:

  • Volvo S80 I (184) in 2001 – 2006;
  • Volvo XC90 I (275) in 2002 – 2006.


Production years 2001-2006
Displacement, cc 2922
Fuel system injector
Power output, hp 272
Torque output, Nm 380
Cylinder block aluminum R6
Block head aluminum 24v
Cylinder bore, mm 83
Piston stroke, mm 90
Compression ratio 8.5
Features DOHC, intercooler
Hydraulic lifters yes
Timing drive belt
Phase regulator at intake and exhaust
Turbocharging twin-turbocharged
Recommended engine oil 5W-30
Engine oil capacity, liter 6.7
Fuel type petrol
Euro standards EURO 4
Fuel consumption, L/100 km (for Volvo XC90 2003)
— city
— highway
— combined
Engine lifespan, km ~250 000

Disadvantages of the B6294T engine

  • Twin-turbo unit is famous not only for high consumption, but also for expensive spare parts;
  • The weak point of this motor is the phase regulators, they often break and flow;
  • Also, the fan control unit and the fuel pump regularly fail here;
  • The timing belt does not always serve the prescribed 100,000 km, and when it breaks, the valves bend;
  • Other problems include air leakage in the intake and low resource of engine mounts.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top