Under the bonnet, the Active Tourer and Gran Tourer get received new efficiency-boosting powertrain tech. And all engines benefit from a friction-reducing machining technique, and diesel models get a selective catalytic reduction system that uses AdBlue to reduce NOx emissions.
These engine tweaks increase power in the petrol engines by up to 7bhp and torque by up to 7lb ft, while fuel efficiency has increased by around 5%.
BMW has also uprated the fuel injection system. The updated MPVs are now available with a more efficient seven-speed dual-clutch gearbox, with the seventh gear given an especially long ratio for greater fuel economy on long, fast journeys.
Petrol engines in the Active Tourer emit between 127 and 132g/km of CO2, with fuel economy ranging between 47.1 and 50.4mpg. Diesels emit as little as 113g/km CO2, rising to 124g/km for the most powerful model, the 220d xDrive. Fuel economy ranges between 57.6 and 65.7mpg. The 225xe plug-in hybrid returns a claimed 57g/km CO2 and 113mpg.
At the front, the kidney grilles have grown, while the front bumper now features larger air intakes, while at the rear, larger exhausts and a revised bumper complete the exterior tweaks.
For the Active Tourer, prices start at £24,905 for the 216d – £2645 more than the entry-level Mercedes-Benz B-Class in B180 SE spec – and rise to £24,285 for the plug-in hybrid 225xe.
For the Gran Tourer, prices start at £27,705 for 216d and top out at £34,820 for the 220d xDrive.
Deliveries of both updated models begin in May.