Engine Saab B235R

The 2.3-liter Saab B235R turbo engine was assembled at the company’s factories from 1999 to 2009 and was installed on the first generation of the popular 9-3 and 9-5 models in the charged Aero version. This unit, in essence, was a lightweight modification of the well-known B234R turbo engine.

2.3-liter H-series engines: B234E, B234i, B234R, B235E, B235R.


Production years 1999-2009
Displacement, cc 2290
Fuel system distributed injection
Power output, hp 230 – 260
Torque output, Nm 350 – 370
Cylinder block cast iron R4
Block head aluminum 16v
Cylinder bore, mm 90
Piston stroke, mm 90
Compression ratio 9.3
Features intercooler
Hydraulic lifters yes
Timing drive chain
Phase regulator no
Turbocharging MHI TD04HL-15T
Recommended engine oil 0W-30
Engine oil capacity, liter 4.0
Fuel type petrol
Euro standards EURO 3/4
Fuel consumption, L/100 km (for Saab 9-5 Aero 2007)
— city
— highway
— combined
Engine lifespan, km ~200 000

The engine was installed on:

  • Saab 9-3 I (YS3D) in 1999 – 2002;
  • Saab 9-5 I (YS3E) in 1999 – 2009.

Disadvantages of the Saab B235R engine

  • First of all, this motor is worried about regular oil leaks, especially at the joints;
  • Hydraulic lifters have a modest resource and often begin to knock to 150,000 km;
  • By the same run, the oil pump often wears out, which is dangerous for liners;
  • Closer to 200,000 km, oil scraper rings lie here and lubricant consumption appears;
  • This unit does not tolerate tuning, its lightweight pistons can simply burn out;
  • The block of balancers does not differ in a large resource, usually they get rid of it;
  • The weak points of the engine also include the ignition cassette, turbine and electric throttle.

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