The Westfield XTR2 is an ultralightweight, two-seater sports car manufactured by Westfield Sportscars Limited, of West Midlands, UK. It features a lightweight steel tubular spaceframe chassis, and the 170 horsepower, 1299cc Suzuki Hayabusa 4 cylinder engine, mated to a 6-speed sequential gearbox. Performance upgrades are available, however. It lacks a windshield, side doors, roof, and is virtually devoid of interior luxury. As a result of this simplicity, the car only weighs between 410-440 kilograms, depending on configuration. By achieving an extremely high power to weight ratio, it has been intended primarily as a car to be used on the race track. However, it is still legal for road use ( at least in the UK). It has been suggested that List of cars be merged into this article or section. ... A 1973 Westfield 7. ... Car classification is a somewhat subjective subject, as many vehicles fall between classes or even outside all of them. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Ariel Atom The Ariel Atom is a high performance sports car made by Ariel vehicles based in Somerset, England. ... Wikipedia does not yet have an article with this exact name. ...

The XTR2 made a notable appearance on the revamped version of BBC's Top Gear, where it outperformed a Pagani Zonda in a timed lap of a test track. The Zonda was the current track time champion. Although the record has since been surpassed by several expensive supercars, it was a foreshadowing of a future record lap time by the Ariel Atom, another minimalist sports car to which the XTR2 has often been compared. Top Gear is a BBC television series about cars and motorsports. ... The Pagani Zonda is a supercar made by Italian car maker Pagani. ... Ariel Atom The Ariel Atom is a high performance sports car made by Ariel vehicles based in Somerset, England. ...

The XTR2, although still sold by Westfield, has been supplemented by the Westfield XTR4, which offers a more powerful engine, and numerous aesthetic and structural refinements.