GMC reviews
OctaneScore has pooled 23 expert YouTube reviews of 13 GMC models. The best-reviewed is the 2026 GMC Sierra EV with an Octane Score of 91.
GMC models by Octane Score
GMC Sierra EV1 generation · 1 review · best at Driving Tech (100), weakest at Value (69)91GMC Sierra HD1 generation · 1 review · best at Driving Tech (100), weakest at Value (50)89GMC Acadia1 generation · 2 reviews · best at Driving Tech (100), weakest at Value (50)89GMC Yukon3 generations · 4 reviews · best at Performance (100), weakest at Value (50)86GMC Sierra 2500HD1 generation · 2 reviews · best at Performance (100), weakest at Value (0)84GMC Sierra 15001 generation · 1 review · best at Driving Tech (100), weakest at Value (33)83GMC Sierra2 generations · 3 reviews · best at Driving Tech (89), weakest at Value (50)79GMC Sierra 2500 HD1 generation · 2 reviews · best at Livability (95), weakest at Value (20)78GMC Hummer EV1 generation · 1 review · best at Design (97), weakest at Reliability (22)67GMC Hummer1 generation · 1 review · best at Performance (100), weakest at Value (0)67GMC Canyon1 generation · 2 reviews · best at Design (86), weakest at Economy (31)65GMC Terrain1 generation · 2 reviews · best at Reliability (100), weakest at Economy (36)60GMC Hummer EV SUV1 generation · 1 review · best at Driving Tech (87), weakest at Value (0)54