Downsizing is an element of Audi's efficiency strategy to which it is absolutely committed. The Audi A3 model line will soon introduce yet another turbocharged petrol engine featuring lower displacement. It unites maximum performance with minimum consumption.
Designed from scratch, the new 1.2 TFSI generates 105PS from a displacement of 1,197 cm3. And as is typical of Audi, turbocharging and direct petrol injection once again work in harmony to maximise efficiency. Thanks to an aluminium crankcase, this four-cylinder engine weighs just 89.5 kilograms; this remarkably low weight also boosts its efficiency.
The 1.2 TFSI has been optimised to minimize friction. Eight valves are actuated by a single camshaft. A common-rail system injects the fuel. An electric control valve operates the turbocharger's wastegate valve; boost pressure builds up spontaneously and scavenging losses drop.
This compact engine generates 175 Nm (129.07 lb.-ft.) of torque between just 1,500 and 3,500 rpm. It propels the three-door Audi A3 1.2 TFSI from 0 to 62mph in 11.1 seconds; the Sportback, in 11.3 seconds. Both versions reach a top speed of 118mph and can return up to 51.3mpg (combined cycle), while emitting just 127 grams of CO2 per kilometre. The new engine will initially be paired with front-wheel drive and a six-speed manual transmission.
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