The Astra GTC is Vauxhall’s latest model to benefit from the new 1.6 CDTi diesel engine. When fitted to the three-door hatch in entry-level Sport trim it’s priced from £22,260 and is on sale now with deliveries expected from September.
Also available in Limited Edition and flagship SRi specs, the ‘Whisper Diesel’ engine replaces the old 1.7-litre CDTi unit, now offering up to 72.4mpg and emissions as low as 104g/km of CO2.
Fitting the larger 20-inch alloys will impact these figures slightly, although Vauxhall still expects 68.9mpg and no more than 109g/km.
Performance has received a small boost, too, with an additional 6bhp and 20Nm of torque resulting in a maximum total output of 134bhp and 320Nm. Unlike the outgoing 1.7 CDTi, only the 1.6-litre’s more powerful variant will be available in the GTC, with the 109bhp unit not making its way over from the standard Astra.
The Euro 6 emissions standards-compliant 1.6-litre CDTi features both Start/Stop tech and a braking energy recuperation system as standard, plus re-designed components, which Vauxhall claims helps balance “performance, refinement and economy.”