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Real MPG: BMW 4 Series Convertible (2014 - 2020) 420d Automatic

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50.4–64.2
Official MPG
(NEDC)
39.0–55.4
Real MPG
46.3
Real MPG
Average
81%
of Official MPG
(NEDC)

More engines available for this model:

Engine Official MPG (NEDC) Official MPG (WLTP) Real MPG Avg. Real MPG %  
420d 53.3–58.9 mpg - 47.0 mpg 84% Submit
420i 41.5–45.6 mpg - 29.8 mpg 68% Submit
420i Automatic 38.7–48.7 mpg - 33.1 mpg 76% Submit
425d 46.3–54.3 mpg - - - Submit
425d Automatic 44.1–56.5 mpg - - - Submit
425i 37.7 mpg - - - Submit
425i Automatic 35.8 mpg - - - Submit
428i 40.4–41.5 mpg - 34.0 mpg 83% Submit
428i Automatic 42.2–42.8 mpg - 32.7 mpg 77% Submit
430d 46.3 mpg - 43.3 mpg 94% Submit
430d Automatic 44.1–51.4 mpg - 40.5 mpg 85% Submit
430i 36.2–40.4 mpg - 32.4 mpg 85% Submit
430i Automatic 34.4–44.8 mpg - 33.2 mpg 84% Submit
435d Automatic 47.9 mpg - 40.0 mpg 83% Submit
435d xDrive Automatic 44.1–49.6 mpg - 40.3 mpg 86% Submit
435i 32.1–34.9 mpg - 23.0 mpg 69% Submit
435i Automatic 32.1–37.7 mpg - 31.4 mpg 90% Submit
440i Automatic 36.2–39.2 mpg - 32.6 mpg 87% Submit
*Based on WLTP MPG values

Read the Honest John review...

BMW 4 Series Convertible (2014 - 2020)

Folding metal roof boosts security and refinement, high-quality interior is packed with technology, softer suspension means a smoother ride than the 4 Series Coupe.

Rivals

BMW 4 Series Convertible (2014 - 2020) 37.0 avg mpg
Audi TT Roadster (2015 - 2023) 35.4 avg mpg
Vauxhall Cascada (2013 - 2018) 40.8 avg mpg
Audi A3 Cabriolet (2014 - 2020) 43.7 avg mpg

View more rival models

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Passat (2011 - 2015)

B-Class (2019 on)