The Lexus LFA is a two-seat exotic sports coupe produced by Lexus as a concept car, "halo" vehicle, racing prototype, and production model. It is the second model in the F marque line of performance vehicles from Lexus, following the IS F. Three concept versions have been shown, each debuting at the North American International Auto Show with the LF-A designation as part of the LF Series concept line. The first LF-A concept premiered in 2005, followed in 2007 by a second LF-A with a more completely furnished interior and exterior. The third version of the LF-A, a roadster model, premiered in 2008. The production model, trademarked LFA, was shown at the Tokyo Motor Show in October 2009. The production Lexus LFA features a new V10 engine and a carbon fiber-reinforced polymer (CFRP) body. CFRP materials account for 65 percent of the LFA's body composition by mass. The LFA is scheduled to go into production in late 2010, with a projected run of 500 vehicles at the base price of US$375,000.A circuit-tuned variant is scheduled for 2012.
The production Lexus LFA has an overall length of 177.4 inches (4,510 mm), while its wheelbase measures 102.6 inches (2,610 mm), with a height of 48 inches (1,200 mm) and width of 74.6 in (1,895 mm). Compared to the prior 2007–2008 concepts, the production model is nearly 2 inches (51 mm) longer, with identical width, height, and nearly same wheelbase dimensions. The exterior design of the LF-A concepts and the final production model was the work of car stylists led by Lexus Design general manager Kengo Matsumoto. The overall design ethos was based on the principle of form follows function, with aesthetics secondary to aerodynamics and operation.The LFA body features sharp edges and cutoffs for improved aerodynamic performance, made possible by the carbon fiber body. body was designed with an emphasis on downforce. There are air scoops located over the rear fenders which feed the aft-mounted radiators and help cool the brakes. A horizontal hood gap also feeds air to the engine. Two small aft vents expel air that is collected by an underbody air scoop and used to cool the titanium exhaust pipes. Dual hood ducts serve to move hot air away from the exhaust manifold.
The LFA's speed-sensitive rear wing incorporates a Gurney flap and deploys at speeds over 50 mph. With the wing retracted the LFA's body has a drag coefficient of Cd 0.31. The LFA body is offered with a choice of 28 standard exterior colors, along with 3 wheel colors and a matte black option. Additional "special colors" are available to order. The front and rear fenders, doors, roof rails, and rocker panels are made out of blast fiber reinforced sheet panels, while the tail lamps are light-emitting diode (LED) lights.
Lexus LFA
Lexus LFA Side view
Lexus LFA 2010
Lexus LFA Front view
The LFA interior incorporates carbon fiber, leather, alcantara, and metallic surfaces. There are two bucket seats, and Lexus' Remote Touch controller interface. The interior design uses bespoke materials and colors.The instrument display is a digital thin-film transistor (TFT) speedometer with color-changing background, size-changing numbers, and side-appearing submenus
In operation the TFT display shows small digits in automatic mode; larger and bolder numbers in normal mode; inverted colors, moved redline, and stark numbers in sport mode, along with a programmable redline warning color change. The tachometer display also features an electric movable metal ring with layer acrylic plastic to create a 3D effect. The LFA further features a new driver and passenger seat-belt airbag design increases similar to the S-Class ESF safety concept car. The steering wheel features a right-mounted start button and alloy paddle-shifters. To activate the vehicle the driver must insert the key beside the steering wheel then press the start button. Two octaves of engine sound are channeled into the cabin via twin ducts which connect the firewall with intake manifold, with the sound tuned in the manner of an Ovation guitar. A 12-speaker Mark Levinson sound system with compact lightweight components was also developed for the interior.
The Lexus LFA is powered by a 72° 4.8-liter V10 engine equipped with dual VVT-i carrying the 1LR-GUE designation with a maximum output of 560 PS (412 kW) delivered at 8,700 rpm. Its maximum torque output of 354 lb·ft (480 N·m) arrives at 6,800 rpm, 90 percent of which is available from 3,700 rpm. The engine redlines at 9,000 rpm, but with a fuel cutoff set at 9,500 rpm, and is constructed using forged aluminum pistons, forged titanium connecting rods, and solid titanium valves. Dry sump lubrication prevents engine oil starvation through high speed corners and lowers the engine's center of mass. Air is fed directly from beneath the hood through a visible slit passing into a dual stage variable intake manifold and then into ten individual throttle bodies before finally exiting from a dual stage titanium muffler.The LFA's engineers selected a V10 engine over an equivalent displacement V8 engine for its higher revs, and over a V12 for its lower reciprocating mass,allowing for more rapid engine response. Lexus claims their engine can rev from idle to its redline in 0.6 seconds and an analog tachometer needle could not accurately track the LFA's changes in engine speeds. This necessitated the use of digital tachometer which can instantly display engine speed. The engine reportedly weighs less than the manufacturer's own 3.5-liter 2GR-FE V6 engine. Engineers attempted to make the engine sound like that of a Formula One car with high revs, while at the same time maintaining reliability and vibration control. Along with other manufacturers such as Ferrari, Toyota had produced their own F1 engines and chassis designs. The exhaust note was meant to sound like the "roar of an angel", and a US television spot later used the engine sound to shatter a champagne glass via resonance frequency
Lexus LFA Inside view
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