The 2.3-liter turbocharged engine Saab B235R was produced in the company's factories from 1999 to 2009 and installed in the first generation of popular models 9-3 and 9-5 in the Aero sports version. This engine was essentially a slight modification of the well-known turbocharged engine B234R. H-engine series: B204i, B204E, B204L, B205E, B234i, B234E, B234R, and B235E.
| Exact capacity | 2290 cm³ |
| Power system | distributed injection |
| Engine power | 230 - 260 HP |
| Torque | 350 - 370 nm |
| Engine block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder diameter | 90 mm |
| Piston stroke. | 90 mm |
| Compression ratio | 9.3 |
| Engine features | intercooler |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | MHI TD04HL-15T |
| What oils to use | 4.0 liters 0W-30 |
| Fuel type | 95 |
| Environmental class | EURO 3/4 |
| Approximate life expectancy | 200 000 HP |
| City | 12.8 litry |
| Route | 6.4 litry |
| Mixed | 8.8 litry |
Engine number B235R is located in front of the engine, next to the gearbox. First and foremost, this motor is plagued by regular oil leaks, especially at the joints. The hydraulic compensators have a modest lifespan and often start to knock around 150,000 km. Around the same mileage, the oil pump also tends to wear out, which is dangerous for the bearings. Closer to 200,000 km, the oil rings become worn and oil consumption starts to increase. This unit does not tolerate tuning, as its lightweight pistons can easily burn out. It also does not have a long lifespan, and the balancing block is usually removed. Weak points of the engine also include the ignition cassette, turbocharger, and electronic throttle.
| 9-3 I (YS3D) | 1999 - 2002 |
| 9-5 I (YS3E) | 1999 - 2009 |
The 2.0-liter Saab B204i engine was produced at the company's factories from 1994 to 2000 and practically installed in all models of that time, such as the 900, 9000, and 9-3. This is a simple naturally aspirated engine used in the basic versions of the mentioned cars. The H-engine series includes models: B204E, B204L, B205E, B234i, B234E, B234R, B235E, and B235R.
The 2.0-liter turbocharged engine Saab B204L was produced in the company's factory from 1993 to 1999 and was installed in the second generation of the 900 model and in the first year of production of the 9-3 model. This turbocharged engine, with a boost pressure of 0.73 bar, was the average power in its range of units. H series of engines: B204i, B204E, B205E, B234i, B234E, B234R, B235E, and B235R.
The 2.0-liter turbo engine Saab B205E was produced by the Swedish company from 1998 to 2009 and installed in the first generation of the most popular models under the indexes 9-3 and 9-5. This engine was actually a slight modification of the well-known turbocharged unit B234E. H-engine series: B204i, B204E, B204L, B234i, B234E, B234R, B235E, and B235R.
The 2.3-liter turbo engine marked with the symbol B234E was produced by Saab only between 1994 and 1998, and it was exclusively installed in the upgraded version of the 9000 model known as EcoPower. This turbocharged engine with a boost pressure of 0.55 bar was considered the least powerful in this series. The H-series engines include: B204i, B204E, B204L, B205E, B234i, B234R, B235E, and B235R.
The BMW B47 engine series, with a capacity of 2.0 liters and consisting of four cylinders, running on diesel fuel, has been produced since 2014. This engine is installed in front-wheel drive vehicles as B47C20, in rear-wheel drive vehicles as B47D20, and in Mini models as B47C20A. These engines come in two different generations, and their updated versions are called B47TU1. The R4 engine lineup also includes the following engines: M41, M47, and N47.
The 3.5-liter engine Toyota V35A-FTS was introduced in 2017 together with the new Lexus LS500 model. This power unit is equipped with twin turbocharging and achieves over 400 horsepower and 600 Nm of torque. Soon, these engines will replace all eight-cylinder V configurations under the hood of many models in the group. Currently, the V35A series includes only one engine.