2002 Acura RD-X Concept

The RD-X is designed to be powered by a unique 250 horsepower, 4-wheel drive, hybrid powertrain that combines a high-output i-VTEC(TM) engine with an Integrated Motor Assist (IMA) system. Under the hood is a high performance 2.4-liter, 16-valve, DOHC 4-cylinder engine coupled to 6-speed, close-ratio clutchless manual transmission, which drives the front wheels, while the advanced IMA system powers the rear wheels.

Inspired by Honda’s Formula One race cars, the RD-X’s clutchless manual transmission uses computer controls to operate the clutch for smooth engagement. Shifting is accomplished with a paddle shifter mounted close at hand on the center console while the close-ratio design of the gearbox helps the driver extract maximum performance from the engine.

To boost acceleration and enhance handling, especially in foul weather, the RD-X boasts a newly developed IMA system with twin electric motors to power the rear wheels when extra driving force or traction is needed. This unique configuration increases power and distributes torque similar to an all-wheel drive SUV.

In Detail

submitted byRichard Owen
valvetrainDOHC, 4 Valves per Cyl w/VTEC
displacement2400 cc / 146.5 in³
power186.4 kw / 250.0 bhp
specific output104.17 bhp per litre
bhp/weightbhp per tonne
driven wheels4WD
front tiresMichelin 235/60R18
front brakesDiscs
f brake sizemm / in
rear brakesDiscs
r brake sizemm / in
wheelbase2573 mm / Not Available in
length4265 mm / Not Available in
width1900 mm / Not Available in
height1561 mm / Not Available in
transmission6-Speed Clutchless Manual
gear ratios:1