Complete technical specifications for the Opel Astra GTC 2.0 T 170hp Enjoy — 170 hp, petrol, coupe, 2005. Performance highlights: 0–100 km/h in 8.5 s, top speed 220 km/h (137 mph), consumption 9.0 l/100km (31.4 mpg UK · 26.1 mpg US).