2018 Vauxhall Astra GTC • Compare 9 used cars with valuation

Market overview: Price Analysis (October-2026): A used 2018 Vauxhall Astra GTC typically costs between £6,521 and £19,083 • On average, used 2018 Vauxhall Astra GTC cars have covered 44,290 miles – with a few high-mileage examples reaching up to 94,698 miles • Depreciation and price trends over the last 12 months for the 2018 Vauxhall Astra GTC stand at -£980.