Reliability AnalysisBased on known issue patterns, repair cost data, and ownership trends · How we score

2023 BMW Z4 Reliability ReportCommon Problems, Repair Costs & Expert Verdict

85/ 100

KeepScore

LOW RISK

Grade: B+

An exhilarating and relatively reliable roadster, provided you're prepared for premium brand ownership costs.

Full system breakdown + what I would do

Quick Facts · 2023 BMW Z4

  • Has 2 NHTSA recalls on record — the most notable involves the visibility:power window devices and controls.
  • Scores 2 points below the strongest nearby year — the 2022 BMW Z4 earns a 87.
  • The system most likely to surface first: infotainment & electrical systems (minor severity).

Should You Buy the 2023 BMW Z4?

The 2023 BMW Z4 stands out as a surprisingly robust and engaging luxury roadster, benefiting greatly from its shared platform and powertrains with the Toyota Supra. While premium parts and service costs are inherent to the BMW badge, major mechanical failures are uncommon, making it a confident choice for those seeking open-top exhilaration without excessive reliability worries.

Biggest Strengths

  • Robust B48 and B58 powertrains
  • ZF 8-speed automatic transmission
  • Solid chassis and structural integrity

Top Risk Areas

The systems that break first on the 2023 BMW Z4. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.

1
Infotainment & Electrical Systemsminor
2
Convertible Roof Mechanismmoderate
3
Suspension & Steering Componentsmoderate
Typical mileage, cost ranges, and the exact what-to-check list are in the full report.

NHTSA Recalls

2 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.

VISIBILITY:POWER WINDOW DEVICES AND CONTROLS

BMW of North Americal, LLC (BMW) is recalling certain 2023 8 Series Coupe (840i, 840i xDrive, M850i xDrive, M8), 8 Series Convertible (840i, 840i xDrive, M850i xDrive, M8), 8 Series Gran Coupe (840i, 840i xDrive, M850i xDrive, M8, Alpine B8 xDrive), 2 Series Coupe (230i, 230i xDrive, M240i xDrive, M2), and 2022-2023 Z4 sDrive30i, Z4 M40i vehicles. When the digital key is removed from the vehicle, the Electronic Control Unit (ECU) software may still allow the power windows and sunroof to be closed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 118, "Power-operated Window Systems."

POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

BMW of North America, LLC (BMW) is recalling certain 2023 Toyota GR Supra, 3 Series Sedan (330i xDrive, M340i xDrive, M3), 5 Series Sedan (530i, 530i xDrive, M5), 4 Series Gran Coupe (430i, 430i xDrive), 4 Series Coupe (430i, 430i xDrive, M440i xDrive), 4 Series Convertible (430i, 430i xDrive, M440i xDrive), 8 Series Coupe (840i, M850i xDrive, M8), 8 Series Convertible (840i, M850i xDrive, M8), 8 Series Gran Coupe (850i xDrive, M8), X3 SAV (X3 xDrive30i, X3M), X4 SAV (X4 xDrive30i), X5 SAV (X5 xDrive40i, X5 M50i, X5M), X6 SAV (X6 xDrive40i, X6 M50i, X6M), and Z4 sDrive30i, Z4 M40i vehicles. The weld seam of the integrated transmission control unit's cover may not have been manufactured properly, which could allow automatic transmission oil to leak into the transmission control unit.

What breaks on the 2023 BMW Z4?

Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.

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BMW Z4 by Year

Compare KeepScores across nearby years of the BMW Z4. Click any year for its full report.

If You're Considering This, Also Look At

Similar class, similar year range — ranked by KeepScore.

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Frequently Asked Questions

Full Report

2023 BMW Z4

7-system breakdown, mileage danger zones, repair cost projections, buyer checklist, and expert verdict.

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