2018 Jaguar XJ 3.0 d V6 Portfolio

Overview

• Make: Jaguar
• Model: XJ
• Trim: Portfolio
• Version: 3.0 d V6 Portfolio Auto RWD Euro 6 (s/s) 4dr (296 bhp)
• Year: 2018
• Mileage: 141,000 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 296 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Blue
• CO2: 155 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Jaguar XJ Portfolio has covered 141,000 miles, around 79,800 more miles than is typical for its age. The AskCar estimate for this car is £9,723. It is priced at £8,995, which is £728 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 262 Jaguar XJ cars across different ages and specifications. We first recorded this advert 115 days ago, and its asking price has since fallen by £1,000. Its advertised mileage matches the government's MOT record. It is for sale at Highline Autos in Wantage. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £728 (7%) under the AskCar estimate of £9,723.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 262 priced Jaguar XJ adverts across different ages and specifications, as of 4 November 2026.

A 2018 Jaguar XJ with the 3.0 diesel engine is typically advertised at £18,900: the median of the 13 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2018 Jaguar XJ has been on sale for at least 115 days.

Price history

AskCar first saw this advert on 12 July 2026 at £9,995. Its asking price is now £8,995, £1,000 less. The latest price cut was seen on 5 October 2026.

Price changes recorded:

• 12 July 2026: £9,995
• 16 September 2026: £9,495
• 5 October 2026: £8,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 25 March 2027.

It has had 7 MOTs. The latest, on 26 March 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 141,175 miles, which matches the advertised 141,000 miles.

Advertised mileage is about 79,800 miles higher than the median mileage of a 2018 Jaguar XJ on AskCar.

Similar cars

6 other 2018 Jaguar XJ Portfolio 3.0 diesel automatic saloons are for sale at UK dealers, from £15,990 to £21,999, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 Jaguar XJ Portfolio, 3.0 diesel saloon, black. Mileage: 77,000 miles. Price: £15,990, £6,995 more than this car. Dealer: Holwood Car Sales in Bromley. AskCar page: https://askcar.co.uk/car/jaguar-xj-2018-db74bee5d68e
• 2018 Jaguar XJ Portfolio, 3.0 diesel saloon, grey. Mileage: 52,704 miles. Price: £19,980, £10,985 more than this car. Dealer: BUY & Go Cars in Cardiff. AskCar page: https://askcar.co.uk/car/jaguar-xj-2018-22c0f63063f6
• 2018 Jaguar XJ Portfolio, 3.0 diesel saloon, black. Mileage: 42,311 miles. Price: £20,995, £12,000 more than this car. Dealer: Stream Cars in Bagshot. AskCar page: https://askcar.co.uk/car/jaguar-xj-2018-cc91654da3a1