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: 42,311 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 296 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Black
• CO2: 155 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Jaguar XJ Portfolio is advertised with 42,311 miles, approximately 18,900 below the typical mileage for its age. The AskCar estimate for this car is £21,354. It is priced at £20,995, which is £359 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 262 Jaguar XJ cars across different ages and specifications. Since we first spotted the advert 160 days ago, the asking price has dropped by £3,994. Its advertised mileage matches the government's MOT record. The seller is Stream Cars, based in Bagshot. 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: £359 (1%) under the AskCar estimate of £21,354.

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 160 days.

Price history

AskCar first saw this advert on 28 May 2026 at £24,989. Its asking price is now £20,995, £3,994 less. The latest price cut was seen on 20 July 2026.

Price changes recorded:

• 29 May 2026: £24,989
• 16 June 2026: £23,790
• 25 June 2026: £22,795
• 10 July 2026: £21,995
• 20 July 2026: £19,995
• 18 August 2026: £20,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 18 May 2027.

It has had 5 MOTs. The latest, on 19 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 42,697 miles, which matches the advertised 42,311 miles.

Advertised mileage is about 18,900 miles lower 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 £8,995 to £21,999, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 Jaguar XJ Portfolio, 3.0 diesel saloon, grey. Mileage: 39,500 miles. Price: £20,160, £835 less than this car. Dealer: Evans Halshaw MG Grantham in Grantham. AskCar page: https://askcar.co.uk/car/jaguar-xj-2018-bce3300b565c
• 2018 Jaguar XJ Portfolio, 3.0 diesel saloon, black. Mileage: 38,748 miles. Price: £21,999, £1,004 more than this car. Dealer: cinch in Ashford. AskCar page: https://askcar.co.uk/car/jaguar-xj-2018-1d5d94b2c9e2
• 2018 Jaguar XJ Portfolio, 3.0 diesel saloon, red. Mileage: 37,389 miles. Price: £21,400, £405 more than this car. Dealer: Sytner Select Cardiff in Cardiff. AskCar page: https://askcar.co.uk/car/jaguar-xj-2018-77490f02a5f5

• The nearest: 2018 Jaguar XJ Portfolio, 3.0 diesel saloon, black, 32 miles from this car. Mileage: 77,000 miles. Price: £15,990, £5,005 less than this car. Dealer: Holwood Car Sales in Bromley. AskCar page: https://askcar.co.uk/car/jaguar-xj-2018-db74bee5d68e