Jaguar S-Type 2.5 V6 Engine Replacement Compare Prices & Get Quotes

A rebuilt Jaguar S-Type 2.5 V6 engine typically costs between £1,200 and £2,400 for supply only. Including specialist supply and fit labour, the total cost generally ranges from £1,800 to £3,500.

• Used engines start around £600-£1,200 but carry unknown mileage risks.
• Reconditioned units offer a middle-ground price point with upgraded VCT components.
• Prices vary by engine code, mileage, and specialist availability.

VCT solenoid issues in the Jaguar S-Type 2.5 V6 typically present as a rough idle, loss of low-end torque, and an illuminated check engine light.

• Sludge accumulation disrupts oil flow to the cam phasers.
• The engine may hesitate or stall at low speeds.

Given that typical market values for this variant range from £500 to £2,500, a full engine replacement often exceeds 60% of the car's value.

• For daily drivers, a targeted repair (like a VCT solenoid swap) or a low-mileage used engine is usually more cost-effective.
• If the car is a well-maintained classic or holds sentimental value, a rebuilt unit with upgraded timing components is the best long-term investment.

Most Jaguar S-Type 2.5 V6 engine swaps do not require complex ECU reprogramming if you fit an identical AJ20 engine code.

• However, the PATS immobiliser system may need dealer-level diagnostic tools to pair the new engine's ECU with your car's existing security module.
• Specialist workshops with Jaguar diagnostic equipment handle this process routinely.

The AJ20 is a 2.5-litre naturally aspirated V6 producing 196hp, serving as the entry-level petrol option.

• The AJ27 is a 3.0-litre V6 producing 240hp, offering significantly more mid-range torque and overtaking capability.
• While they share similar architecture, they are not direct plug-and-play swaps due to differences in ECU mapping, engine mounts, and ancillary components.