10 Vehicles That Will Gain Value in 2023 According to Hagerty Published on December 7, 2022 in Top 10 by The Car Guide Photo: Hagerty 2004-2010 Mercedes-Benz SLR McLaren ($329,300-$380,700 USD) German supercar enthusiasts still prefer the Porsche Carrera GT, but the SLR McLaren is on the upswing, with younger buyers fueling much of the demand.