
Many small changes can make a big difference. Therefore, to further improve efficiency, every aspect of vehicle performance is under continuous assessment by Opel engineers.

Air drag is a crucial factor for the fuel consumption and the emissions of a car, especially at higher speeds.
Aerodynamic fine tuning can therefore be found on all ecoFLEX cars, reaching from lowered chassis, optimised front design to active grill shutters, which adapt the air flow trough the engine compartment to the thermal needs.

The roll resistance of the tyres is another important factor for consumption. In contrast to the aerodynamics it is considered as independent of speed. Reducing of the roll resistance can result in fuel savings up to 4%.
Modern low roll resistance tyres fulfil the same standards for treadwear, traction and temperature resistance as regular tyres.

Longer drive ratios allow reduced engine speed at a given vehicle speed, but also mean less acceleration. By coupling longer drive ratios to engines with increased power and low end torque, this handicap is avoided on most Opel ecoFLEX cars.
Awareness of when to shift is a key factor in economic driving. Most Opel ecoFLEX models have a shift indicator easily visible in the instrument cluster, letting the driver know the optimum time to change gear for maximum efficiency.

Opel´s air conditioning systems are driven by an externally controlled compressor that operates only as and when needed. This not only enables better climate control, but also cuts fuel consumption and emissions in comparison to a conventional system, where the compressor is driven at all times from the engine.
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Images may show optional equipment.

