The Opel Gran Turismo Coupé Concept, abbreviated as Opel GTC Concept, was a concept car that was manufactured by Opel and designed to be a coupé version of the Opel Vectra C.[1] The GTC premiered at the 77th Geneva Motor Show in 2007.

[3] The GTC was powered by a turbocharged 2.8 L (171 cid) V6 engine from the High Feature family, which was also used in the standard Vectra but tuned in the GTC to produce 300 hp (224 kW) and 295 lb⋅ft (400 N⋅m) of torque.

The base and floorpan came from the platform General Motors Epsilon II but were modified for all wheel drive to apply the power effectively.

[4] Design cues of the Opel GTC were then used on the Opel Insignia, an upmarket replacement for the Vectra which was launched in October 2008.

The front bumper was an inspiration to the Opel Ampera, a car based on the Chevrolet Volt.