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Buyers can choose from three trim levels: base, Sport and Design.
There are four engine options, starting with the 1.6, then 1.8 and a 2.0-litre turbo, with a 148bhp 1.9 turbodiesel rounding things off.
The Astra TwinTop will arrive in May with prices stretching from the £16,995 starting point to £20,695.
Source: © topgear.com