Ron Carter 5-Star Promise: We Deliver Cadillac Test Drives to Your Door, We Will Beat Any other New Cadillac Dealer offer by $1,000, We Will Buy Your Car for $500 More Than Anyone, Loaners for Owners Delivered to Your Door. See Ron Carter for details. The Cadillac XT4 is a luxury compact SUV, competing with other small SUVs and crossovers such as the Mercedes GLA and BMW X1.. Looking for reliability? You can stop right here. You can open the sunroof and feel the fresh air in this SUV. Fill up less often! Thiis vehicle's EPA estimated fuel economy is a high 26 MPG combined. You'll also love this XT4's rear view camera, power mirrors, smart steering wheel controls, tinted/privacy glass and security system. Offers to purchase may only be made following purchaser test drive. No dealers.