Prime competitors include the Porsche Panamera, Audi A7 and BMW 6 Series Gran Coupe. (cars.com)
Sensational styling, sophisticated V8 engines (supercharged in the XKR variants, reviewed separately), and finely tuned suspensions allow these luxuriously appointed 2 +2 grand tourers to vie for the attentions of potential upscale owners against prime competitors that include the BMW 650i and Porsche 911. (kbb.com)