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2020 BMW

840i xDrive Gran Coupe

Auto (S8), 6 cyl, 3.0 L, Turbo

BMW 840i: best and worst years
2020 BMW 840i xDrive Gran Coupe

Closest available photo (2024 model year); you're viewing the 2020.

2024 photoCharles from Port Chester, New YorkCC BY 2.0Wikimedia Commons

Overview

Body
Midsize CarsEPA, from EPA, last updated 6/22/2026
Drivetrain
All-Wheel DriveEPA, from EPA, last updated 6/22/2026
Transmission
Automatic (S8)EPA, from EPA, last updated 6/22/2026
Powertrain
GasEPA, from EPA, last updated 6/22/2026
Fuel
PremiumEPA, from EPA, last updated 6/22/2026

Engine & performance

Cyl
6EPA, from EPA, last updated 6/22/2026
Aspiration
TurbochargedEPA, from EPA, last updated 6/22/2026
Start-stop system
YesEPA, from EPA, last updated 6/22/2026

Efficiency

MPG Hwy
27 mpgEPA, from EPA, last updated 6/22/2026
MPG City
20 mpgEPA, from EPA, last updated 6/22/2026
MPG Comb
23 mpgEPA, from EPA, last updated 6/22/2026
Fuel $/yr
$3,350EPA, from EPA, last updated 6/22/2026
CO₂
388 g/miEPA, from EPA, last updated 6/22/2026
Eco Score
5/10EPA, from EPA, last updated 6/22/2026
Smog score
3/10
Elec. Range
0 miEPA, from EPA, last updated 6/22/2026
SmartWay certified
No

Safety NHTSA, model year

Stability control (ESC)
Standard
Forward-collision warning
No
Lane-departure warning
No
Recalls
0
Owner complaints
0

Known issues manufacturer service bulletins, model year

124 service bulletins filed with NHTSA for this model year

  • May 6, 2026ENGINEB010126

    The EVAP systems purge (vent) valve limited warranty for defects in materials and / or workmanship has been extended to 15 years / 150,000 miles as determined from the original first in-service / delivery date.

  • Aug 21, 2025ELECTRICAL SYSTEMB521125

    If the seat ventilation is deactivated via the switch or due to parking the vehicle, the fans in the seat cushionor under the seat cushion surface are unpleasantly loud. The fans speed up loudly twice and then turn off. The functionality of the fans is not impaired. This behavior only occurs after the vehicle had been programmed to I level S18A- 25-07-520 and higher; upto, but not including S18A- 25-07-551.

  • Mar 27, 2025POWER TRAINB270220

    There is a jerking or shuddering during either or both of the following: Cornering or accelerating from low speeds Driving with low to medium loads There are no warning lights or Check Control messages.

  • Nov 14, 2024ENGINEB010121

    For this vehicle, the engine coolant thermostat limited warranty for defects in materials or workmanship has been extended to 15 years/150,000 miles, as determined from the original in-service date.

  • Feb 28, 2024ELECTRICAL SYSTEM:SOFTWAREB610321

    SITUATION BMW AG is conducting a Voluntary Emissions Recall (effective April 23, 2021) on a certain Model Year 2020 - 2021 BMW vehicles that were produced between August 13, 2019 and December 11, 2020. Do not deliver to a customer, a New, Certified Pre-Owned or Used vehicle subject to an emissions recall, until the vehicle is repaired. Do not use or sell replacement equipment/parts subject to an emissions recall. The 12 V battery’s dual storage system (DSS) may contain a software erro

  • Feb 21, 2024EQUIPMENTB660720

    The functionality of the left rear SRR sensor could be reduced which would display the Driving Assistance Check Control Message.

  • Feb 20, 2024EQUIPMENTB660820

    The functionality of the right rear SRR sensor could be reduced which would display the "Driving Assistance"- Check Control Message.

  • Jan 16, 2024VISIBILITY:POWER WINDOW DEVICES AND CONTROLSB510819

    The basic conditions for initializing the power windows are not met.

  • and 116 more

Source: NHTSA manufacturer communications (technical service bulletins).

Warranty manufacturer terms, by make

Basic
4 yr / 50k mi
Powertrain
4 yr / 50k mi
Roadside assistance
4 yr
Maintenance
3 yr / 36k mi
EV battery
8 yr / 100k mi

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.