New Astra Engine Lineup Claims 19% Efficiency

A new engine line-up for the latest generation Vauxhall/Opel Astra is claiming up to a 19% reduction in fuel consumption and CO2 emissions for both diesel and gasoline versions.

The new turbocharged motors will also see a nine-speed automatic transmission option used for the first time in the brand now owned by the PSA Group. Compact, three-cylinder, turbo gasoline units are available with 1.2 and 1.4-liter displacements with power outputs ranging from 108bhp to 143bhp and maximum torque from 143ft-lbs to 174ft-lbs.

Integration of the water-cooled exhaust manifold in the cylinder head contributes to quick engine warm-up, lowering emissions after a cold start. Also, at 1,500 rpm, 90% of the maximum torque is already available within 1.5 seconds of pressing the accelerator. Claimed fuel economy is as much as 64mpg (53mpg US) and CO2 emissions as little as 120g/km.

Its diesel offerings also feature three-cylinder motors but this time in 1.5-liter capacity with power outputs ranging from 103bhp to 120bhp while torque spans 191ft-lbs to 221ft-lbs. The common rail fuel injection system operates at up to 2,000 bar and exhaust after-treatment is delivered by a passive oxidation catalyst, AdBlue injector, SCR catalyst and diesel particulate filter. Claimed efficiency is fuel consumption as high as 64mpg (53mpg US) and CO2 emissions as low as 130g/km.

— Paul Myles is a seasoned automotive journalist based in London. Follow him on Twitter @Paulmyles_

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