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2018 Lamborghini Aventador S Roadster 2018 Lamborghini Aventador S Roadster

2018 Lamborghini Aventador S Roadster

What's even more outrageous than Lamborghini's stealth bomber-inspired Aventador S? The Aventador S Roadster, which features a two-piece composite targa top that's removable for the ultimate 217-mph wind-in-your-hair experience. Overview Like the coupe, the Aventador S Roadster rides on a carbon-fiber chassis that teams with a number of other carbon and aluminum components throughout the car to keep weight down. Despite additional structural bracing to compensate for the lack of a fixed top, the Aventador gains just 110 pounds in the transition from coupe to Roadster - although few would call the 4200-pound curb weight dainty. Concerns about weight - and most other rational thoughts - are extinguished once one experiences the Aventador S Roadster's mellifluous and absurdly potent V12. Displacing 6.5 liters and boasting a lofty 8500-rpm red line, this beast of a motor makes 740 horsepower and 508 lb-ft of torque at 5,500 rpm. When you couple that much power with the car's Haldex all-wheel-drive system, what you get is a zero-to-62 mph time of three seconds flat and a top speed of 217 mph. These figures put the Aventador S Roadster proudly atop the Lamborghini's convertible range and easily in the company of the most impressive drop-top supercars in the world. Fuel economy is likely the last thing on the mind of anyone considering a Lamborghini, but the automaker added two technologies in the interests of efficiency and the environment. The first, a start-stop system that shuts down the engine to save fuel at traffic lights or in stop-and-go traffic, is a supercapacitor-based technology that's lighter and faster to restart the engine than a traditional battery-based system. The second is a cylinder deactivation system that shuts down half of the V12's cylinders during light-throttle situations, temporarily turning it into a straight-six. When the driver lays into the throttle, the other six cylinders fire back up for full power. Despite those technologies, there's only so much they can do to enhance the mileage of the inherently thirsty V12 - fuel economy is rated at 10 mpg in the city and 16 mpg on the highway. Shifting duties are handled by a seven-speed single-clutch automated manual gearbox that Lamborghini refers to as a robotized Independent Shifting Rods (ISR) transmission. Capable of blasting from gear to gear in just 50 milliseconds, it can be a bit herky-jerky at low speeds and isn't as refined overall as the dual-clutch boxes used by some competitors. Lamborghini said it opted to use the ISR to save weight over a dual-clutch unit. Big carbon ceramic brakes on both ends bring the action to a stop. The S model benefits from a four-wheel steering system that makes it feel much nimbler around a track than its size and weight suggest. Get the Aventador S Roadster out to an empty, winding road, and the supercar will impress with its superb engine, accurate steering, and excellent overall balance. The roadster's torsional stiffness with its roof removed is 37-percent lower than that of the coupe, but most drivers will be hard-pressed to notice the difference on the road. Clip the two-piece targa roof -- a simple process of placing the top's locating pins into four windshield sockets and securing two rear latches -- into place, and the roadster gains an additional 10 percent of torsional rigidity. When removed, the top can be stored in the front trunk, where it eats up nearly all of the already limited cargo space. The Roadster features two pop-up b-pillar posts to protect occupant's heads in case of a rollover, in addition to a model-specific rear window that can be lowered for optimal access to the V12 soundtrack. Standard tech is in Standard features are quite extensive, including electronic control goodies such as ABS, EBD, ASR, ESC, a hill holder function, an electronically controlled rear spoiler, an electronically controlled side air intake system, servotronic and an integrated command with three different driving modes that integrate the gearbox, differential, engine response, and servotronic simultaneously. Interior and vehicle standard features include: key-less ignition, full TFT displays in the cockpit, on-board computer, multimedia system with seven-inch display, iPod and USB interface, navigation, Bluetooth, bi-xenon headlights with washer, LED daytime running lights, automatic air conditioning with solar sensor, crepuscular and rain sensors and electrically adjustable and heated side mirrors with folding function. Key competitors While exotic sports cars don't usually get cross-shopped like mid-size sedans, buyers can compare the Lamborghini Aventador S Roadster to the Aston Martin Vanquish S Volante.

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