Convertibles with folding metal roofs are more expensive than those with fabric roofs, right? Not if it's the new Astra TwinTop. This stunning new model undercuts all its class rivals to start at just £16,995. With three models and four engines to choose from, Astra TwinTop offers an exceptional blend of style, driving dynamics and value.Even at £16,995 the entry level Astra TwinTop 1.6 16v has an equipment tally to make its competitors look less than cool. A power roof, four airbags, alarm, CD player, all-round electric windows, electrically adjustable and heated door mirrors and air conditioning all come as standard. This model also features the innovative 16-inch structure wheel, so you don't need to worry about bumping into the kerb as you admire your reflection in the shop window.Next up is the Sport model, priced from £17,795, with 16-inch alloy wheels, front fog lights, trip computer, steering wheel mounted audio controls and remote control roof operation. As well as the highly efficient 1.6 16v Twinport, Sport models can be specified with the all-new 1.8 16v VVT 140PS engine and the 1.9CDTi 150PS diesel.Topping off the range is the Design, available from £18,995. Offering the choice of 1.8 16v VVT, 1.9CDTi 150PS turbodiesel and scorching 2.0 Turbo 200PS engines, this model is sure to cut a dash with 17-inch 10-spoke alloys, sport switch and a sports steering wheel. Rain-sensitive windscreen wipers, anti-dazzle rear view mirror, automatic lighting control and a windbreak are also all standard.Design models feature automatic pop-up roll-over protection bars in place of the static bars on Twin Top and Sport models, making the lines even sleeker without compromising safety.Customers can specify a range of options including unique 'saddle' leather trim for £750 and Vauxhall's class leading Adaptive Forward Lighting system which is also £750.Read our exclusive first drive review of the Vauxhall Astra Twintop here