XJ X308 · 1997–2003

Jaguar XJ XJR 4.0 XJ X308 · 363 hp (1997 to 2003)

The Jaguar XJ XJR 4.0 of the XJ X308 generation uses the AJ27S 4.0 V8 petrol engine with 363 hp.

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Technical specifications

Fuel: Petrol
Power: 363 PS / 267 kW
Displacement: 3 996 cm³
Cylinders: 8
Engine code: AJ27S 4.0 V8
Period covered: 1997–2003
Documented market: Europe

Transmission

Automatic · 5 speeds

Figures apply to the cited configuration and market; equipment and transmissions may vary by production date.

Specification source : [1] AutoKarnet

This version

363 hp (267 kW), rear-wheel drive, 5-speed automatic. Built from 1997 to 2003.

AutoKarnet advice

In the range

It is the most powerful petrol version of this generation.

AutoKarnet advice

Maintenance and records

Oil and filter change

Typical interval: 26,000 km or 12 months, whichever comes first.

26 000 km

12 months

JLR STJLR.03.5005 / STJLR.03.5007 / Ford WSS-M2C913 — Engine, model year and severe use may require a shorter interval; do not exceed the service warning. The listed oil approvals are not interchangeable: check the one for the engine.

Source [1]

Brake fluid

Brake fluid: generally replaced every 2 years; inspect the brakes at each service.

24 months

Brake fluid: generally replaced every 2 years; inspect the brakes at each service.

Source [1]

Questions about this version (2)

Which engine is in the Jaguar XJ XJR 4.0 XJ X308?

The AJ27S 4.0 V8 petrol engine (3 996 cc), 363 hp (267 kW).

AutoKarnet advice

Which oil for the Jaguar XJ XJR 4.0?

A JLR STJLR.03.5005 / STJLR.03.5007 / Ford WSS-M2C913-approved oil suited to the AJ27S 4.0 V8 engine.

AutoKarnet advice

Documentary sources

[1] Rédaction AutoKarnet
AutoKarnet · FR · Europe · Synthèse éditoriale AutoKarnet · Accessed 09/10/2026