The 2.5-liter gasoline engine Jaguar AJ25 was produced by the company from 2001 to 2009 and installed in the most popular models of the British firm, such as the S-Type and X-Type. This engine was essentially one of the variants of the Duratec V6 family of power units. The AJ-V6 series also includes engines: AJ20 and AJ30.
| Exact capacity | 2495 cm³ |
| Power system | distributed injection |
| Engine power | 195 - 200 HP |
| Torque | 240 - 250 nm |
| Engine block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder diameter | 81.65 mm |
| Piston stroke. | 79.50 mm |
| Compression ratio | 10.5 |
| Engine features | DOHC |
| Hydraulic compensator. | there is no |
| Timing drive | chain |
| Timing phase adjuster | on the suction shaft |
| Turbocharging | there is no |
| What oils to use | 5.9 liters 5W-30 |
| Fuel type | 95 |
| Environmental class | EURO 3 |
| Approximate life expectancy | 350 000 HP |
| City | 15.0 litry |
| Route | 7.6 litry |
| Mixed | 10.3 litry |
The weight of the AJ25 engine according to the catalog is 170 kg. The engine number AJ25 is located at the junction of the block and the oil pan. The unit is quite reliable but stands out for its many rare and expensive spare parts. The main problems are related to air leaks due to deteriorating gaskets. Also, the intake system often fails in terms of geometry adjustment with electric drive. The VKG valve requires regular cleaning or else it will leak from all gaps. At high mileage, oil consumption can occur due to worn piston rings.
| S-Type 1 (X200) | 2002 - 2007 |
| X-Type 1 (X400) | 2001 - 2009 |
The 2.1-liter Jaguar AJ20 petrol engine was produced by the company from 2001 to 2008 and was installed in the smallest model, the X-Type, but it was only available in certain markets. This is the only engine in the series that does not have an equivalent in the Duratec V6 family. The AJ-V6 series also includes the engines: AJ25 and AJ30.
The 4.0-liter V8 petrol engine Jaguar AJ28 was produced by the company from 1999 to 2002 and only installed in advanced versions of the S-Type sedan before its first facelift. This engine was a variant of the AJ26 unit, which was used in the XK sports model. The AJ-V8 series includes the following engines: AJ33, AJ33S, AJ34, AJ34S, AJ126, AJ133 and AJ133S.
The 4.2-liter V8 petrol engine Jaguar AJ33 was produced by the company from 2002 to 2009 and installed in models such as XK8 and XJ8, as well as S-Type, although it was more commonly referred to as AJ36. In addition to the 4.2-liter engine, a 3.5-liter power unit was also offered under this index. The following engines belong to the AJ-V8 series: AJ28, AJ33S, AJ34, AJ34S, AJ126, AJ133, and AJ133S.
The 4.2-liter petrol engine Jaguar AJ34 was produced by the company from 2003 to 2009 and installed in popular models such as XK and XJ, as well as S-Type and replaced by XF. Based on this power unit, an engine for Land Rover off-road vehicles was created, designated AJ41. The following engines belong to the AJ-V8 series: AJ28, AJ33, AJ33S, AJ34S, AJ126, AJ133, and AJ133S.
The 2.0-liter engine Toyota 1AZ-FE or 2.0 VVT-i was produced by the company from 2000 to 2014 and was installed in well-known models such as Camry, RAV4, Ipsum, and Avensis Verso. Most versions of this engine were equipped with the VVT-i variable valve timing system on the intake camshaft. The AZ series also includes the following engines: 1AZ-FSE, 2AZ-FE, 2AZ-FSE, and 2AZ-FXE.