This is the Lamborghini Aventador J, a one-off, road-legal roadster that company boss Stephan Winkelmann says is a testament to his firm’s commitment to pushing the limits of design, despite increasingly rigid road car regulations.
As such, it takes its name from the world motorsport governing body’s ‘Appendix J’ regulations, which define racing car class specifications. The J also invokes Lamborghini’s history, referencing the one-off 1970 Lamborghini Jota, which was a high-performance version of the legendary Miura.
The roofless roadster took centre stage on the firm’s Geneva motor show stand and has already been sold off at an undisclosed price as “the most extreme expression of Lamborghini DNA in existence”. It is priced at €2.1million, or about £1.75m.
Lamborghini has pledged that no other prototypes or museum pieces will be made in the same vein — although insiders have confirmed that a more widely available but less extreme Aventador roadster will be launched later this year.
Modifications are restricted to the J’s extreme styling; it’s powered by the same 690bhp 6.5-litre V12 as that of the fixed-head car. It also has the same four-wheel drive system and uses a modified version of the same pushrod suspension.
The J is based on the Aventador’s carbonfibre monocoque, although it has been extensively modified to accommodate the roofless structure, as well as being stripped out in the interests of saving weight. The bodywork has also been substantially reworked to boost aerodynamic grip.
The loss of the roof, windscreen, air-con, stereo system and sat-nav mean the Aventador J is significantly lighter than the coupé; Lamborghini says the interior has been stripped out, as any gadgets would detract from the “raison d’etre of this car: to provide an extreme driving experience”. It also features upward-opening doors that are substantially thinner and lighter than the coupe’s. Lamborghini has not released its weight, however.