Confirmed: BMW working on 4 cylinder turbo, may come to U.S. - Autoblog
Remembering the 1,350-HP Turbocharged Four-Cylinder Built by BMW During the 1980s - autoevolution
List of BMW engines - Wikipedia
The Evolution Of BMW's Respected Inline-Four - BimmerLife
Remembering the 1,350-HP Turbocharged Four-Cylinder Built by BMW During the 1980s - autoevolution
BMW Turbo-charges All Four Cylinder Engines For More Power
BMW M Boss Says the Future Won't Bring Any 3- or 4-Cylinder M Cars
BMW 318/E46 ENGINE 4 CYLINDER- MOTOR 318/E46 CYLINDER
BMW M Says It Won't Downsize To 4-Cylinder Engines Like Mercedes-AMG Did | Carscoops
BMW Four-Cylinder Diesel Engine Getting The Biturbo Treatment
BMW 4-cylinder engines return to US in 2011 in the Z4 sDrive28i; approximately 20% gain in fuel efficiency over naturally aspirated 3.0L I-6 - Green Car Congress
BMW brings the 4-cylinder engine back to North America in 2011 | Car News | Auto123
BMW 4 Cylinder Engines for the US - autoevolution
BMW 528i: Fewer Cylinders, Not That You'll Notice - The New York Times
Officially Official: BMW announces 2.0-liter four-cylinder turbo for U.S. - Autoblog
10 of the Most Powerful Four-Cylinder Cars We've Ever Tested
The Evolution Of BMW's Respected Inline-Four - BimmerLife
BMW Turbo 4-Cylinder Engine | Dreyer & Reinbold BMW North
The new BMW TwinPower Turbo 4-Cylinder Diesel Engine (09/2014)
BMW's New 600-HP 4-Cylinder Engine Shows How Far Engineering Has Come Since 1969
Is BMW Crazy For Turning The 7 Series Into A 4-Cylinder Plug-In Hybrid? | CarBuzz
BMW's New 600-HP 4-Cylinder Engine Shows How Far Engineering Has Come Since 1969
BMW 4-Cyl. Techy, Torquey and Efficient | WardsAuto
2016 BMW 4 Series Review
