Audi A3 range expanded

• Two hybrids join the range
• New S3 Sportback
• S3 arrives in September, will cost £31,640

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Three new versions of the Audi A3 Sportback are on display at the Geneva motor show.

The first, the A3 Sportback E-tron, is a petrol-electric plug-in hybrid that offers a claimed average economy of 188mpg and CO2 emissions of 35g/km.

The E-tron pairs a 148bhp 1.4-litre petrol engine with an electric motor to produce a combined output of 201bhp. This gets the car from 0-62mph in 7.6 seconds and on to a top speed of 138mph. It has an electric-only range of 31 miles.

It's expected to go on sale next year, with prices revealed closer to its on-sale date.

Also on show is the A3 Sportback G-tron. Powered by a 1.4-litre petrol engine and Audi's E-gas – a CO2-neutral gas – the G-tron produces 109bhp, averages 80.7mpg and emits 95g/km of CO2. It accelerates from 0-62mph in 11.0 seconds.

Along with the two hybrids, Audi is also showing its performance-oriented version, the S3 Sportback. The 296bhp 2.0-litre petrol engine powers the S3 from 0-62mph in 5.0 seconds and returns average economy of 40.9mpg.

The S3 Sportback will be available with optional all-LED headlights and Audi's magnetic ride system.

Order books open in April, with the first UK deliveries in September. Prices for the new S3 Sportback start at £31,640 and remain unchanged from those of the previous-generation car.

Read more from the 2013 Geneva motor show >>