The Jaguar AJ20 2.1-liter gasoline engine was produced by the company from 2001 to 2008 and was installed in the most compact X-Type model, but was offered only in certain markets. This is the only power unit in the series that has no analogues in the Duratec V6 family.
AJ-V6 family: AJ20, AJ25, AJ30.
Specifications
| Production years | 2001-2008 |
| Displacement, cc | 2099 |
| Fuel system | distributed injection |
| Power output, hp | 156 |
| Torque output, Nm | 196 – 201 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 81.65 |
| Piston stroke, mm | 66.84 |
| Compression ratio | 10.75 |
| Features | DOHC |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | on the intake shaft |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.9 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Jaguar X-Type 2004) — city — highway — combined |
14.3 7.4 10.1 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 170 |
The engine was installed on:
- Jaguar X-Type 1 (X400) in 2001 – 2008.
Disadvantages of the Jaguar AJ20 engine
- This is a fairly reliable, but very rare engine and parts for it are expensive;
- The main problems are caused by air leaks due to drying gaskets;
- Even in the intake, the electrically driven geometry adjustment system often fails;
- It is necessary to clean the crankcase ventilation valve regularly or the grease will press from all the slots;
- After 200 thousand km, oil consumption is often found here due to the occurrence of rings.
Frequently asked questions about the Jaguar AJ20
How much power does the Jaguar AJ20 make?
The Jaguar AJ20 develops 156 hp and 196 - 201 Nm of torque.
How much oil does the Jaguar AJ20 take and which one?
Engine oil capacity: 5.9 liters. Recommended oil: 5W-30.
Does the Jaguar AJ20 have a timing belt or chain?
The Jaguar AJ20 uses a timing chain.
Is the Jaguar AJ20 turbocharged?
No, the Jaguar AJ20 is naturally aspirated.
Does the Jaguar AJ20 need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
How long does the Jaguar AJ20 last?
The typical lifespan of the Jaguar AJ20 is ~300 000 km with proper maintenance.
What is the fuel consumption of the Jaguar AJ20?
Jaguar X-Type 2004: city 14.3, highway 7.4, combined 10.1 L/100 km.
What cars was the Jaguar AJ20 installed on?
Jaguar X-Type 1 (X400) in 2001 - 2008.
What are the common problems of the Jaguar AJ20?
This is a fairly reliable, but very rare engine and parts for it are expensive. The main problems are caused by air leaks due to drying gaskets. All known problems.
