 The Acura TL implementation of SH-AWD is actually mechanically more similar to the SH-AWD layout in the Acura MDX and RDX in that the rear differential is over driven at a constant 1.7% faster than the front wheels, unlike the Acura RL, which, since its introduction in 2004, added an acceleration device which can over drive the rear wheels up to 5.7% faster than the front wheels.As of 2010 the Acura RL remains the only SH-AWD configuration with the variable speed rear differential acceleration device.The newly introduced 2010 Acura ZDX four-door sports coupe maintains a mechanically similar fixed 1.7% over driven rear differential configuration to the other Acura SH-AWD equipped vehicles

Acura announced in late 2008 that the 2010 Acura TL SH-AWD will be implemented with a six-speed manual transmission.