GMC Terrain 2018–2021 vs GMC Terrain 2026 size comparison
GMC Terrain 2026 is 22 mm (0.5%) shorter than GMC Terrain 2018–2021. It is 54 mm (2.9%) wider, 28 mm (1.7%) taller and 5 mm (0.2%) longer in wheelbase. Boot space with the seats up is 838 L and 844 L (+6 L).
| Dimension | GMC Terrain 2018–2021 | GMC Terrain 2026 | Difference |
|---|---|---|---|
| Length | 4630 mm | 4608 mm | -22 mm (-0.5%) |
| Width | 1839 mm | 1893 mm | +54 mm (+2.9%) |
| Height | 1661 mm | 1689 mm | +28 mm (+1.7%) |
| Wheelbase | 2725 mm | 2730 mm | +5 mm (+0.2%) |
| Boot | 838 L | 844 L | +6 L |
GMC Terrain 2018–2021 dimensions · GMC Terrain 2026 dimensions