Most common 2020 BMW Z4 problems
Share of the 5 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
BMW Z4 complaints by model year
Best Z4 years: 2012, 2015, 2021. Years to avoid: 2011, 2003, 2004, 2005, 2006. Compare all years →
2020 BMW Z4 recalls (6)
Electrical system › Starter assembly › Relay
BMW of North America, LLC (BMW) is recalling certain 2019-2021 BMW 330i, 2019-2022 BMW Z4, 2020-2022 BMW 530i, X3, X4, Toyota Supra, 2021-2022 BMW 430i, 430i Convertible, and 2022 BMW 230i vehicles. The engine starter relay may corrode, causing the relay to overheat and short circuit.
Remedy: Owners are advised to park their vehicles outside and away from structures until the remedy is complete. Dealers will replace the engine starter, free of charge. Owner notification letters were mailed February 6, 2026.
Engine
BMW of North America, LLC (BMW) is recalling certain 2020 M340i, M340i xDrive, 540i, 540i xDrive, X3 M40i, 2020-2021 X4 M40i, 745Le xDrive, 2019-2021 Z4 M40i, and 2020-2021 Toyota Supra vehicles. During engine start, the engine management software may cause loss of braking assist.
Remedy: Dealers will update the engine management software, free of charge. Owner notification letters were mailed on September 17, 2021. Owners may contact BMW customer service at 1-800-525-7417.
Fuel system, gasoline › Storage › Tank assembly
BMW of North America, LLC (BMW) is recalling certain 2020-2021 Z4 and 2020-2021 Toyota Supra vehicles. The weld between the fuel tank halves may have been insufficiently welded, causing the weld to fail.
Remedy: BMW will notify owners, and dealers will replace the fuel tank, free of charge. The recall began December 18, 2020. Owners may contact BMW customer service at 1-800-525-7417 or Toyota customer service at 1-888-270-9371.
Exterior lighting › Headlights
BMW of North America, LLC (BMW) is recalling certain 2019-2020 Z4 sDrive30i, Z4 M40i and 2020 Toyota Supra vehicles. The headlamps are able to be adjusted horizontally. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices and Associated…
Remedy: BMW will notify owners, and dealers will inspect the headlamp vertical and horizontal adjustment plugs, correcting them as necessary, free of charge. The recall began December 23, 2020.
Exterior lighting › Headlights
BMW of North America, LLC (BMW) is recalling certain 2020 Z4 M40i, Z4 sDrive30i, 330i and 330i xDrive vehicles as well as 2020 Toyota Supra vehicles. The headlight control units may fail causing a loss of one or both of the headlights.
Remedy: BMW will notify owners, and dealers will replace the headlight control units, free of charge. The recall is expected to begin January 17, 2020.
Back over prevention › Sensing system › Camera
BMW of North America, LLC (BMW) is recalling certain 2018 540d, 2018-2020 530i, 530i xDrive, 540i, 540i xDrive, M550i xDrive, M5, 530e, 530e xDrive, X3 sDrive, X3 xDrive, X3 M40i, X3 M, and 2019-2020 X4 xDrive, X4 M40i, X4 M, X7 xDrive, X7 M50i, 740Li, 740Li xDrive, 750Li, 750Li xDrive, 8 Series Convertible and Coupe 840i, 840i…
Remedy: BMW will notify owners, and dealers will update the back-up camera software, free of charge. The recall began November 8, 2019. Owners may contact BMW customer service at 1-800-525-7417 or Rolls-Royce at 1-877-877-3735.
2020 BMW Z4 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.0L 4-cyl turbo | 8-speed automatic | RWD | 24 / 32 / 27 |
| 3.0L 6-cyl turbo | 8-speed automatic | RWD | 24 / 31 / 26 |
EPA ratings. Class: Sports car.
Frequently asked questions
Is the 2020 BMW Z4 a good car?
Based on 5 owner complaints filed with NHTSA, the 2020 Z4 rates better than average: 45% fewer complaints than a typical year of the Z4 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2020 BMW Z4?
The steering — 2 complaints, 40% of all complaints for this model year. Next are the brakes (2) and engine & cooling (2).
How many recalls does the 2020 BMW Z4 have?
There are 6 recalls for the 2020 BMW Z4, the most recent from September 23, 2025 (relay). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the BMW Z4?
The best years by complaints, compared at the same age, are 2012, 2015 and 2021. Years to avoid or approach with caution: 2011, 2003, 2004, 2005 and 2006. See the full BMW Z4 years comparison.
At what mileage do 2020 BMW Z4 problems happen?
The median mileage reported in complaints is about 3,000 miles; 100% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.