Update: Five-door version of M135i confirmed for Australia. See BMW Australia comments at bottom of article.
To be doubly clear, BMW says this is not a successor to the limited-edition 1 Series M Coupe. But, for fans of big engines in little cars, it'll do the trick.
Power here is supplied by - no surprise - BMW's turbocharged inline-six, producing 235kW and 450Nm of torque.
For those keeping score, that's the same torque numbers offered with the 1 Series M, but the genuine M car has another 15kW of power over this new hatch.
While the 1 M was offered with a manual transmission only, the M135i gets a six-speed manual and an eight-speed automatic.
In auto form, BMW says the M135i will hit 100km/h in 4.9 seconds - yes, the same time as the manual 1 M - while the manual lists a 5.1 second run.
Those comparable acceleration figures are brought about in part through the huge torque, and also by the M135i's lighter kerb weight; around 70kg lighter than the 1 M Coupe.
One significant point of difference between these two cars, mechanically, is in the steering. While the 1 M benefited from a hydraulic arrangement, the M135i packs an electromechanical system.
The M135i's styling kit includes unique 18-inch rims wrapped in 225/40 tyres up front and 245/35 rubber at the rear, while the front bumper sees the fog lights replaced with large air intakes.
There's a unique body kit all round, topped off by a high-performance exhaust system with dual tips - one at each corner of the rear bumper.
Inside, there's an M-badged sports steering wheel, Alcantara-trimmed seats and red highlights.
Speaking with TMR today, BMW Australia's Scott Croaker confirmed that while the three-door is unlikely for Australia, the five-door M135i is a sure thing.
"When the M135i becomes available in the five-door we will grab that with both hands," Mr Croaker said. "We expect that will happen sooner rather than later but have no official confirmation as yet."
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