2020 BMW 840i Convertible

Compact Sedan Premium
BMW 840i Convertible 2020
24MPG Combined
1 Trim
2020 2021 →
Updated February 27, 2026

The 2020 BMW 840i Convertible Compact Sedan provides 24 combined MPG. We’ve compiled EPA fuel economy data, NHTSA safety ratings, and recall history so you can make an informed decision.

2020 BMW 840i Convertible Specifications

SpecValue
Combined MPG24 combined MPG
City MPG22
Highway MPG29
Body StyleCompact Sedan
Fuel TypePremium
DriveRWD
Available Trims1

Annual Fuel Cost

Based on EPA estimates, the 2020 BMW 840i Convertible costs approximately $2,450 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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