New engines for next-generation Mini

Three- and four-cylinder turbocharged gasoline engines to be offered

Published: September 30, 2013, 5:00 AM
Updated: November 22, 2021, 4:05 PM

Mini 1.5-litre Twinpower Turbo three-cylinder engine

The third-generation Mini Cooper is scheduled to be revealed on November 18, in advance of its public debut at the Los Angeles and Tokyo auto shows the following week.

But the company has already released some details of the new car's engine lineup, which includes all-new three-and four-cylinder gasoline engines. Their use will ultimately expand to the rest of the Mini line, as well as to some of parent company BMW's own branded models.

According to the company, this new generation of engines will optimize the balance between driving thrills and fuel consumption. Diesel versions will also be offered in other markets.

Both the three- and four-cylinder engines are of modular design, with each cylinder displacing 0.5 litres. So the three has a displacement of 1.5 litres and the four, 2.0 litres.

A common feature of both is TwinPower turbo technology, which includes twin-scroll turbocharging, direct fuel injection, variable camshaft control on the intake and outlet sides (dual VANOS) and, in the more powerful versions, fully variable valve control, aka BMW's patented Valvetronic system.

The three-cylinder engine has a single countershaft to help reduce vibration, while the four-cylinder version has has two counter-rotating shafts.

At launch, the three-cylinder will have a rated output of 134 horsepower and 162 lb-ft of torque, from 1250 rpm, with a brief overboost capability of a cubic capacity of 170 lb-ft.

The four-cylinder will be rated at 189 horsepower and 207 lb-ft of torque. Quick response is aided in both by mounting the turbocharger integral with the exhaust manifold. Both engines have a redline of 6500 rpm.

The combined result, in either case, is small engine fuel economy with big engine performance, according to the company. All the engine variants are said to meet new EU6 emissions requirements, which are close to North American standards in their severity.