The M135i ushers in the second generation of BMW’s three-door 1-series, which will initially be sold with the choice of four petrol and three diesel engines.
Set for UK sale beside the existing five-door 1-series from September, Munich’s rear-wheel drive hatchback will be 85mm longer and 17mm wider than its predecessor, introduced in 2005, but the same height.
In line with the new five-door 1-series, it is also based on a larger platform; the wheelbase is 30mm longer and tracks are extended by 51mm at the front and a more considerable 72mm at the rear, giving it a more substantial footprint.
The dimension stretch and packaging advantages give the new car 21mm more rear legroom and 30 litres more luggage space than before, at 360 litres.
New to the line-up is the entry-level 114i model, powered by a 101bhp version of BMW’s turbocharged 1.6-litre petrol engine. First reported by Autocar in March, this engine delivers the same combined fuel economy and CO2 emissions as the more powerful 116i — which uses a 134bhp version of the same engine — at 51.4mpg and 129g/km.