See also:

Customer Satisfaction Procedure (Mexico)
Did you get the Warranty Extension Plan? This plan is recommended by General Motors to supplement the warranty included with the new vehicle purchase. See your dealer for details. Customer Assis ...

AVG (Average) Economy
Displays the approximate average liters per 100 kilometers (L/100 km) or miles per gallon (mpg). The calculation is based on the number of L/100 km (mpg) recorded since the last time this di ...

Powertrain
The XLR's Northstar V-8 VVT is a 90-degree, DOHC, four-valves-per-cylinder engine featuring an aluminum block and cylinder heads, and a valvetrain configuration with roller finger followers. The e ...