Six months after unveiling the Aventador, plans for a roadster version were leaked by the U.S. EPA after it included the model on a data sheet on its website. Lamborghini officially unveiled the Aventador J to the world at the 2012 Geneva Motor Show. The roofless and windowless concept car uses the same V12 engine as the standard Aventador, producing 700 hp through a lightweight seven-speed automated transmission. The car does not have air conditioning or radio to save further weight for a total of 3,472 pounds (1,575 kg).The car presented at the Geneva show was the only unit to be produced, and was sold for US$2,800,000. Another Limited Edition model was made for Shaikh Al Yahyaa and was sold at an unknown price. The car was specially made for a close relation.
The J designation was thought to have come from Appendix J in the FIA rulebook that describes the technical specifications of race cars.However, during an interview with designer Filippo Perini, it was revealed that the ‘J’ actually stands for Jota, in reference to a 1970s one off Lamborghini Miura Jota , which also conformed to the FIA’s Appendix J regulations.
The 2013 Aventador LP 700-4 Roadster was announced for production on 27 December 2012, equipped with the same V12 engine as the coupé version, Lamborghini claims again that it can reach 97 km/h (60 mph) in less than 3 seconds and a top speed of more than 350 km/h (217 mph).
The removable roof consists of two carbon fiber panels, weighing 6 kg (13 lb) each, which required the reinforcement of the rear pillar to compensate for the loss of structural integrity as well as to accommodate the rollover protection and ventilation systems for the engine. The panels are easily removable and are stored in the front luggage compartment. The Aventador Roadster has a unique engine cover design and an attachable wind deflector to improve cabin airflow at high speed as well as a gloss black finish in the A-pillars, windshield header, roof panels, and rear window area. The car has a US$441,600 base price. With a total weight of 1,625 kg (3,583 lb) it’s only 50 kg (110 lb) heavier than the coupé (the weight of the roof, plus additional stiffening in the sills and A-pillars).
The Lamborghini Aventador is a mid-engined sports car produced by the Italian manufacturer Lamborghini.
Launched on 28 February 2011 at the Geneva Motor Show, five months after its initial unveiling in Sant’ Agata Bolognese, the vehicle, internally codenamed LB834, was designed to replace the then-decade-old Murcielago as the new flagship model.
Soon after the Aventador unveiling, Lamborghini announced that it had already sold over 12 of the production vehicles, with deliveries starting in the second half of 2011. By March 2016, Lamborghini had already built 5,000 Aventadors, taking five years to achieve this milestone.