BMW 3 Series and 4 Series Get Cleaner, More Powerful Diesel Engines this March

bmw 3 series touring, 4 series coupe and 4 series Gran Coupe collage 1 photo
Photo: Image edited by autoevolution
With a couple of months before the unveiling of the facelifted BMW 3 Series, the Germans decided to offer the current model a new engine that will probably be carried over in the new generation. The entry-level 316d will now get a new-generation plant with a 2-liter 4-cylinder configuration.
The power output will be the same as on the current models, still rated at 116 HP but there’s a small bump in torque, at 270 Nm (200 lb-ft) compared to 260 Nm (191 lb-ft). Of course, there’s a bigger difference made in the CO2 emission department where the ‘new blood’ is capable of reaching 102 grams/km compared to the old one that would return 114-118 grams.

The new plant will be available on both the sedan and touring models and will also be available with the 8-speed automatic Steptronic transmission.

The 4 Series range will also get new diesels in the entry-level sub-niche. Therefore, the all-new 418d Coupe, 420d Coupe and 420d Gran Coupe will, from now on, be equipped with new-generation B47 plants.

The 418d Coupe will be fitted with the new 2-liter 4-cylinder turbodiesel engine making 150 HP and 320 Nm (236 lb-ft) of torque that will drive fuel consumption down and raise the performance. Going from 0 to 100 km/h (62 mph) takes 8.6 seconds no matter if using the 6-speed manual gearbox or the 8-speed automatic one. Fuel consumption will vary between 4.5 l/100 km to 4.1 /100 km (52.2 to 57.3 mpg US).

The new 420d Coupe and Gran Coupe

Going a bit upwards in the range, the 420d Coupe and Gran Coupe models will get the 190 HP diesel powerplant that also comes with 400 Nm (295 lb-ft) of torque. The Coupe will now accelerate to 100 km/h (62 mph) in 7.3 seconds with the manual and 7.1 seconds when fitted with the automatic 8-speed slush box. That’s 0.2 seconds faster than the current models.

Due to the fact that the Gran Coupe model is heavier, the 420d GC model will be doing the same acceleration 0.2 seconds slower, no matter the transmission. All models can now be fitted with xDrive as well but since that implies even more weight being added to the car, the performance figures will drop by an additional 0.1 seconds.

In addition to the revised engines, new exhaust systems featuring redesigned tailpipes are also being introduced to the BMW 4 Series. The cross section of the exhaust tailpipe for the BMW 418d Coupe is 75 mm (3 in.) while the rest of the exhaust is made of 70mm wide pipe.
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