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All A5 Cabriolet petrol engines feature FSI
®
direct-injection – a unique Audi technology
originally developed for the Le Mans 24-hour endurance race to deliver increased
power and torque as well as enhanced fuel efficiency. The way it does this is, in theory,
very simple. Precisely the right amount of fuel and air are injected directly into the
combustion chambers, enabling the engine to ‘breathe’ more easily. At the same time,
electronics monitor the engine load and adjust the injection process. The result –
reduced heat-loss and increased output, with around a 15% reduction in fuel
consumption and significantly lower exhaust emissions. Ideal for the buyer who
wants an athletic, exhilarating drive without the drawbacks of excessive fuel costs
or high emissions.
All diesel engines from Audi are known as TDI. This impressive technology was originally
pioneered by Audi in 1989, marking a departure from the noisy, fuel-thirsty diesel engines
of the past. Like its FSI petrol counterpart, the TDI diesel engine is designed for power,
performance, low fuel consumption and emissions.
All A5 Cabriolet TDI engines are based on the common rail system. Here, fuel is stored
and kept at constant pressures of up to 1,600 bar, ready to feed a series of highly accurate
piezo injectors, which control the rate and point of injection.
Petrol Diesel
Engines
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