BMW releases 68.9mpg 3 Series Sport model

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BMW 320d ED Sport

With its latest update to the 3 Series range BMW has introduced the most economical 3 Series to date – the 74.3mpg 320d ED – which produces less than 100g/km of CO2, warranting free car tax. Buyers after a slightly sportier machine, without sacrificing too much of the ED's economy, however, can now get themselves the 320d ED Sport.

The Sport model may not be able to match the standard car's tax-free status, but with annual car tax bills weighing in at just £20 for the saloon – thanks to emissions of 104g/km to 108g/km –buyers aren't likely to feel short changed. Meanwhile, those who opt for the Touring estate will have to stump up £30 per year, thanks to emissions of 114g/km for the manual and 111g/km for the eight-speed automatic version.

Economy figures on the other hand, vary from 70.6mpg for the automatic saloon – and 68.9mpg for the manual – to 65.7mpg for the estate, which increases to 67.3mpg in automatic form. Staying true to BMW's heritage as a performance car manufacturer, acceleration figures are still strong, with the saloon models sprinting to 62mph in less than eight seconds, with the slowest model – the manual estate – still requiring just 8.2 seconds for the benchmark sprint.

Prices for these new Sport models start at £30,205 for the saloon and £31,505 for the Touring model. Sport trim adds extras including sharper styling courtesy of 17-inch alloy wheels and updated exterior details, while the interior gains sat nav, leather upholstery with heated front seats and a sports steering wheel for a £500 premium over the base 320d ED.