The ecoFLEX's reduced combined CO2 figure means that business drivers will pay just 18 per cent Benefit in Kind tax – the second lowest band for a diesel car – down from 21 per cent for the already competitive 2.0 CDTi models. The lower CO2 also mean that all Insignia ecoFLEX owners will be better off by £25 per year due to its lower VED band.
And with all drivers keeping a keen eye on the fuel gauge these days, the Insignia ecoFLEX rewards with an official combined figure of 54.7mpg - a 10 per cent improvement on the 2.0 CDTi model - which puts it among the best in class. It also means that the Insignia ecoFLEX now has a potential range of over 842 miles.
But since the Insignia ecoFLEX uses the same 160PS 2.0-litre engine found in higher-powered versions of existing 2.0 CDTi models, there's little change in performance. Top speed remains at 135mph, while 0-60mph takes just 8.9 seconds, making it one of the quickest green derivatives in its class.
Aerodynamics have played a major role in the Insignia ecoFLEX's overall efficiency. Designers have streamlined the car, adding panelling to its underside, while also lowering the ride height by 10mm. As a result, the Cd figure drops from 0.27 for the regular hatch to 0.26 for the ecoFLEX. Low rolling resistance Michelin tyres are also standard on all models.
A higher first and second gear ratio, combined with a higher final drive ratio are the only changes that have been made to the ecoFLEX's powertrain, ensuring that the generous torque from the 2.0 CDTi 160 engine (350Nm from 1750-2500rpm, with overboost to 380Nm) remains to ensure optimum driveability. But to help drivers get the best from their ecoFLEX's economy, a graphic is displayed in the instrument panel recommending the best change-up points.Vauxhall adds Apple CarPlay to Insignia
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