Solstice GXP, ECOTEC 2.0L I4 VVT DOHC Turbocharged, 5-Speed Automatic, and Leather Seating Surfaces. Perfect Color Combination! When's the best time to buy a convertible? When summer is gone and dealers are looking to give them away! Like us! Look at the miles, look at the options then look at the price! And put the top down on those warm spring days which are right around the corner. This Solstice is nicely equipped with features such as Solstice GXP, ECOTEC 2.0L I4 VVT DOHC Turbocharged, 5-Speed Automatic, and Leather Seating Surfaces.