Engine Jaguar AJ28

The Jaguar AJ28 4.0-liter V8 petrol engine was produced by the company from 1999 to 2002 and installed only on advanced modifications of the S-Type sedan before its first restyling. This motor was a variation of the AJ26 unit, which was installed on the XK sports model.

AJ-V8 series: AJ126, AJ27, AJ27S, AJ28, AJ33, AJ33S, AJ34, AJ34S, AJ133, AJ133S.


Production years 1999-2002
Displacement, cc 3996
Fuel system distributed injection
Power output, hp 276
Torque output, Nm 378
Cylinder block aluminum V8
Block head aluminum 32v
Cylinder bore, mm 86
Piston stroke, mm 86
Compression ratio 10.75
Features DOHC
Hydraulic lifters no
Timing drive chain
Phase regulator yes
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 6.0
Fuel type petrol
Euro standards EURO 3
Fuel consumption, L/100 km (for Jaguar S-Type 2000)
— city
— highway
— combined
Engine lifespan, km ~400 000

The engine was installed on:

  • Jaguar S-Type 1 (X200) in 1999 – 2002.

Disadvantages of the Jaguar AJ28 engine

  • The first motors of this series were with nikasil, but the AJ28 version with cast iron sleeves;
  • The timing chain is distinguished by a low resource, sometimes it serves less than 100 thousand km;
  • Also, the engine ECU often fails here and it is better to immediately fill in the latest firmware;
  • This engine is afraid of overheating, monitor the condition of the radiators, pump and thermostat;
  • The remaining problems are related to sensor glitches and leaks of lubricant or antifreeze.

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