The Opel Astra Sports Tourer 1.2 Turbo Hybrid 145 in Europe produced from 2026 to today is 4642 mm long, 1859 mm wide and 1480 mm high with a wheelbase of 2732 mm. The boot volume is 597 liter and increases to 1634 liter with folded rear seats. Below you find all exterior and interior dimensions.
| Exterior | |
| Length | 4642 mm |
| Width | 1859 mm |
| Width (including mirrors) | 2062 mm |
| Height | 1480 mm |
| Wheelbase | 2732 mm |
| Front track | 1559 mm |
| Rear track | 1554 mm |
| Front overhang | 906 mm |
| Rear overhang | 1004 mm |
| Turning circle | 10.68 m |
| Boot / trunk | |
| Boot capacity | 597 L |
| Boot capacity (rear seats folded) | 1634 L |
| Load sill height | 599 mm |
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