The BMW 420d was a diesel-powered variant of the F32 BMW 4 Series that was introduced for the 2014 model year. The 420d was offered in coupe, convertible, and Gran Coupe (sedan) body styles. Initially, these cars were powered by BMW's 2.0L N47 turbocharged inline four engine, but for the 2016 model year, the updated 2.0L B47 turbocharged inline four was used. The B47 engine had only slightly more power and torque than the N47. Production of the F32 BMW 420d lasted until 2019.