Highlights

One of only 150 Paramount Grand Prix cars
Later X100 with AJ34 4.2L 450bhp engine and stronger 6spd gearbox
Supercharged convertible in desirable colour scheme with bespoke improvements
Only three keepers with current collector keeper since 2016
Sparingly used, professionally stored and regularly serviced to July 2025
Advisory-free MOT valid until April 2027

The Appeal

At between £21,000 and £26,000 on top of the standard car’s £70,000 purchase price, the Paramount Grand Prix package for the X100 wasn’t cheap. But it was certainly worth it, because it delivered a power hike from 400 to 450bhp and a considerably more planted and engaged driving experience. The extra power was the result of reworking the supercharger pulley, a remap and fitting an induction system. The cars also got lower, stiffer suspension, and there was the option of an ‘F1 Switch Shift’ steering wheel.

Of the 150 cars believed to have been converted by Paramount, not all got the full ‘450’ treatment. This car appears to have undergone extensive rework by the firm, including sill trims, BBS five-spoke alloys, and that performance upgrade. It is a really tidy example in black metallic with an ivory leather interior and very high factory spec, which is detailed below. As a 2003 car, it benefits from the much-improved 4.2L AJ34 V8 engine and the stronger 6spd auto box with its clever ‘Randle Handle’ J-Gate.

The current keeper, the car’s third, is a collector and acquired the car in 2016. He has covered only 1,300 miles in that time. Despite the sparing use, the car has been regularly serviced, most recently in July 2025. There is also a lengthy MOT valid to April 2027 with no advisories.

The Paramount package is well regarded by enthusiasts, and with good reason. These cars rarely come to market, and this is one of the best we’ve seen.

Key Information

Mileage: 103,424 miles (as recorded at last service in July 2025, not warranted); vendor states that mileage is guaranteed
Country of registration: United Kingdom
Technical inspection status: MOT valid until 22 April 2027, advisory-free
Technical specs: 4.2-litre supercharged V8, 6spd automatic, Paramount Performance Grand Prix 450 upgrade (450 BHP)
Paperwork: Replacement service book with 14 entries, numerous invoices and MOT certificates, spare keys including Green key, toolkit and tyre inflation kit

Specification advised by seller:

Interior Compass
Premium sound
Crossed Drill Brembo Discs
Reverse park control
Adaptive cruise control
Super Sport Suspension
450 Bhp
Midnight Black Metallic paint (Original colour)
Heated front seats
Ivory Recaro Sport seats (Bond Grain)
Pleated leather door inserts
Aluminium side sill sponsons (450 Grand Prix)
Front and rear Grand Prix Paramount Fairings
Power steering weight switch
Sport exhaust
F9 R10 x 20 Paris BBS (Jaguar supplied) wheels in ‘as new’ condition vendor says
Dunlop SP Sport Max Tyres, 255/35/R20 Front and 285/30z/R20 Rear
Aclamesh wind deflectors and sport tonneau
Boot spoiler

Recent service history (further details in photos):

07/25 - 103,424 miles - Bridgeway Autopoint
06/24 - 103,421 miles - Bridgeway Autopoint
06/23 - 103,406 miles - Bridgeway Autopoint
08/21 - 103,375 miles - Bridgeway Autopoint
06/19 - 103,111 miles - David A Black Service Station
06/14 - 97,452 miles - Leigh Motors

Details provided by seller:

A replacement service book contains 14 entries.
- 2 x Watford Jaguar
- 4 x Guy Salmon, Kent
- 1 x Arun Jaguar specialist, West Sussex
- 2 x Leigh Motors, Tonbridge, Kent
- 1 x David Black, Leven
- 4 x Bridgeway Auto Point, Scotland
Last service carried out at 103,424 miles 09/7/25
Only 2 Previous owners in over 23 years
Spare keys including Green key
Numerous invoices and Mot's
Advisory free Mot till 22/4/27
Toolkit and tyre inflation kit

The Detail

Desirable 03-onwards X100 with improved 4.2L engine and stronger 6spd auto box
Black metallic paintwork in good order with few signs of age
Last serviced at 103,424 miles in July 2025
Only approximately 1,300 miles covered in current ownership since December 2016
Midnight Black Metallic paint, stated to be the original colour
Ivory Recaro Sport seats in Bond Grain leather with pleated leather door inserts
Paramount Performance Grand Prix 450 package
Paramount aluminium side sill and front and rear fairings
Cross-drilled Brembo brake discs, Super Sport Suspension and sport exhaust
High specification including adaptive cruise control and reverse park control
Heated front seats and premium sound system
Interior compass and power steering weight switch
20-inch Paris BBS wheels (Jaguar supplied) with quality Dunlop tyres

BEFORE YOU BUY

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