Reliable Auto DB

2020 BMW 840i reliability

Is it reliable?

The 2020 BMW 840i has 0 complaints with NHTSA after 7 years, or 0 per year. That is about even with the other 840i years here. Their median is 0 complaints per year. NHTSA has 5 recalls on file, including Starter, Camera, and Hydraulic brakes.

2020 BMW 840i
Photo by Mr.choppers, resized from the original. Wikimedia Commons CC BY-SA 3.0
Complaints

0

Per year

0

Recalls

5

Years on the road

7

Next to 2021

The 2021 840i has 0 complaints, 0 per year. The 2020 has about the same number of complaints per year as the 2021.

The complaint rate is complaints filed in this year’s first 3 years on the road, divided by however many of those years have passed. Recalls are a separate count. The numbers are for the US-market 2020 BMW 840i. How we count. Data as of .

Recalls (5)

Recall electrical system, starter 2025-09-25 · NHTSA campaign 25V644000
Summary BMW of North America, LLC (BMW) is recalling certain 2020 340I, X6, 2020-2025 840I, 2020-2022 740LI, 2019-2020 X7, and X5 vehicles. After repeated attempts, the starter motor may overheat from an electrical overload.
Remedy Dealers will replace the engine starter, free of charge. This recall includes vehicles repaired under recall 24V576 and those owners will need to have their vehicle repaired again. Owner notification letters were mailed February 9, 2026. Owners may contact BMW customer service at 1-800-525-7417. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov November 17, 2025.
Recall electrical system, starter 2024-08-01 · NHTSA campaign 24V576000
Summary BMW of North America, LLC is recalling certain 2019-2020 X5, X7, 2020 3 Series Sedan, X6, 2020-2021 7 Series Sedan, 2020 8 Series Convertible, 8 Series Coupe, and 2020 8 Series Gran Coupe vehicles. Please see the recall report for the complete list of models. In the event the starter motor fails, repeated attempts to start the vehicle can cause the starter motor to overheat from an electrical overload.
Remedy Dealers will update the vehicle software, free of charge. Owner notification letters were mailed September 27, 2024. Owners may contact BMW customer service at 1-800-525-7417.
Recall back-over prevention, sensing system, camera 2021-02-19 · NHTSA campaign 21V096000
Summary BMW of North America, LLC (BMW) is recalling certain 2019-2021 X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, X4 xDrive30i, X4 M40i, M550i, X4M, X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5M, X5 M50i, X7 xDrive40i, X7 xDrive50i, X7 M50i, Alpina XB7, 330i, 330i xDrive, M340i, M340i xDrive, and 8 Series Coupe, Convertible and Grand Coupe, 840i, 840i xDrive, M850i xDrive, M8, 2020-2021 530e, 530e xDrive, 330e, 330e xDrive, 745Le, 745Le xDrive, X5 xDrive45e, X3 xDrive30e, X6 sDrive40i, X6 xDrive40i, X6 xDrive50i, X6 M50i, X6M, 530i, 530i xDrive, 540i, 540i xDrive, M550i xDrive, M5, 740i, 740Li, 740Li xDrive, M760i Drive, M760Li xDrive, 750Li xDrive Alpina, Alpina B7 xDrive, and 2021 4 Series Coupe 430i, 430i xDrive, M440i xDrive vehicles. When shifting into Reverse, a small portion of the rearview image may be obscured, or the screen may not illuminate. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
Remedy BMW will notify owners, and dealers will inspect the rearview camera software and update it if necessary, free of charge. The recall began April 16, 2021. Owners may contact BMW customer service at 1-800-525-7417.
Recall Hydraulic brakes 2021-02-10 · NHTSA campaign 21V062000
Summary BMW of North America, LLC (BMW) is recalling certain 2020-2021 8 Series Coupe, Grand Coupe and convertible 840i, 840i xDrive, M850i xDrive, M8 and 740 Li, 740 Li xDrive, 750 Li xDrive, M760 Li xDrive, X6 sDrive40i, X6 xDrive40i, X6 xdrive50i, X6 M50i, X6M, and 2019-2021 X5 sDrive40i, X5 xDrive40i, X5 xDrive50i, X5 M50i, X5M, X7 xDrive40i, X7 xDrive50i, X7 M50i, and 2021 M3, M3 Competition, M4 Coupe, M4 Competition Coupe, X5 xDrive45e, 745 Le xDrive. The rotor and shaft within the integrated brake system may not have been welded properly and could separate during a hard braking event, possibly resulting in a loss of the Antilock Brake System (ABS) and braking assistance.
Remedy BMW will notify owners, and dealers will replace the integrated brake system, free of charge. Owner notification letters were mailed on May 25, 2021. Owners may contact BMW customer service at 1-800-525-7417.
Recall seat belts, front, buckle 2020-03-19 · NHTSA campaign 20V164000
Summary BMW of North America, LLC (BMW) is recalling certain 2020 X3 xDrive30e, X4 xDrive30i, X4 M40i, X4M, 330i, 330i xDrive, M340i, 840i Gran Coupe, 840i xDrive Gran Coupe, M850i xDrive Gran Coupe, M8 Gran Coupe, X3 sDrive30i, X3 xDrive30i, X3 M40i, X3M, and 840i xDrive Convertible vehicles. The sensors in the front seat belt buckles may inaccurately detect a belted occupant as unbelted, possibly causing the air bag and seat belt pretensioners to deploy improperly in the event of a crash.
Remedy BMW will notify owners, and dealers will inspect and replace the front seat belt buckles, as necessary, free of charge. The recall began May 18, 2020. Owners may contact BMW customer service at 1-800-525-7417.

Complaints by component (0 total)

No complaints on file with NHTSA for this model year.

Fuel economy

Trim Engine Transmission Drive City Hwy Combined Annual fuel cost
840i convertible 3L, 6-cyl Automatic (8-speed) Rear-wheel drive 22 29 24 MPG $3300
840i Coupe 3L, 6-cyl Automatic (8-speed) Rear-wheel drive 23 30 25 MPG $3200
840i Gran Coupe 3L, 6-cyl Automatic (8-speed) Rear-wheel drive 22 29 24 MPG $3300
840i xDrive convertible 3L, 6-cyl Automatic (8-speed) All-wheel drive 20 27 23 MPG $3450
840i xDrive Coupe 3L, 6-cyl Automatic (8-speed) All-wheel drive 21 27 23 MPG $3450
840i xDrive Gran Coupe 3L, 6-cyl Automatic (8-speed) All-wheel drive 20 27 23 MPG $3450

Specs and fitment

G14/G15/G16 8 Series, 2020–present
Body styles Coupe, Convertible, Gran Coupe
Oil 0W-20 , 6.9 qt capacity
Tire size 245/35R20, 245/40R19, 245/45R18, 275/30R20, 275/35R19, 275/40R18 (trim-dependent)

Known issues for this generation

NHTSA campaign 25V-644 recalls certain 2020–2025 BMW 840i vehicles (with 2020 340i and X6, 2020–2022 740Li, and 2019–2020 X5/X7 among others) because improper starting attempts can locally overheat the engine starter; if engine acoustic protection material is contaminated, that overheating can ignite it and, in rare cases, lead to a thermal event while driving or shortly after parking. Occupants may see or smell smoke. Dealers replace the starter with a redesigned unit free of charge. Vehicles previously repaired under related campaign 24V-576 are included and need the new hardware remedy. The Part 573 report lists about 12,456 potentially involved 840i vehicles within a multi-model total of about 145,102 units.

Compare

See every BMW 840i model year →

Frequently asked questions

Is the 2020 BMW 840i reliable?

The 2020 BMW 840i has 0 complaints with NHTSA after 7 years, or 0 per year. That is about even with the other 840i years here. Their median is 0 complaints per year. NHTSA has 5 recalls on file, including Starter, Camera, and Hydraulic brakes.

Is the 2020 BMW 840i more reliable than the years next to it?

The 2021 840i has 0 complaints, 0 per year. The 2020 has about the same number of complaints per year as the 2021.

Has the 2020 BMW 840i been recalled?

The 2020 BMW 840i has 5 recalls on file with NHTSA. See the recalls table on this page for dates, components, and remedies.

How many complaints have owners filed about the 2020 BMW 840i?

Owners have filed 0 complaints about the 2020 BMW 840i with NHTSA.

What mpg does a 2020 BMW 840i get?

EPA-rated combined fuel economy for the 2020 BMW 840i is 23.7 MPG. See the fuel economy table on this page for city and highway figures by engine and transmission.

What engine oil does a US BMW 840i use?

0W-20 With filter, about 6.9 qt is commonly listed for this generation—confirm in the owner manual.

What tire sizes fit a US BMW 840i?

Published US specs commonly list front 245/35R20, 245/40R19, 245/45R18, 275/30R20, 275/35R19, 275/40R18 (trim-dependent) and rear 245/35R20, 245/40R19, 245/45R18, 275/30R20, 275/35R19, 275/40R18 (trim-dependent); confirm on the door jamb placard for your trim.

What NHTSA recalls affect the US BMW 840i?

NHTSA campaign 25V-644 recalls certain 2020–2025 BMW 840i vehicles (with 2020 340i and X6, 2020–2022 740Li, and 2019–2020 X5/X7 among others) because improper starting attempts can locally overheat the engine starter; if engine acoustic protection material is contaminated, that overheating can ignite it and, in rare cases, lead to a thermal event while driving or shortly after parking. Occupants may see or smell smoke. Dealers replace the starter with a redesigned unit free of charge. Vehicles previously repaired under related campaign 24V-576 are included and need the…