Here you will find yearly U.S. sales figures for the Cadillac XLR. The Cadillac XLR is a luxury roadster produced by Cadillac, an American automobile manufacturer. It was introduced in 2003 and was discontinued in 2009. The XLR was available with a single engine, a 4.6-liter Northstar V8 engine that produced 320 horsepower and 275 pound-feet of torque. The engine was mated to a 6-speed automatic transmission. The XLR was available in two trim levels: Base and V-Series. The Base trim was the base trim level and came standard with features such as a 10-speaker Bose sound system, a power-operated soft top, and heated front seats. The V-Series was the most performance-oriented trim level and came standard with features such as a sport-tuned suspension, a limited-slip differential, and 18-inch wheels.