The 2009 TL sits on a slightly smaller wheelbase than the RL at 109 inches and measures 195.5 inches long with a curb weight of 3,708 lbs., according to cars.com.
The RL is placed on a 110.2-inch wheelbase and measures 195.7 inches long and weighs 4,083 lbs., according to leftlanenews.com.
The 2009 Acura TL features a base model and the sporty SH-AWD version with all-wheel-drive, leather upholstery and a beefier engine, according to Edmunds.com.
The RL features the base model, the mid-level RL Technology and the top-end RL Technology with CMBS, an acronym for Collision Mitigation Braking System that helps reduce front-impact accidents, according to Edmunds.com.
The base TL is powered by a 280-horsepower 3.5-liter V-6 to achieve 0-60 mph in 5.8 seconds and 18 mpg in the city and 26 on the highway, according to Edmunds.com and Motor Trend.
The RL features a 3.7-liter V-6 engine producing 300 horsepower that clocks 0-60 mph in six seconds and achieves 16 mpg in the city and 22 on the highway, according to thecarconnection.com.