Head-to-head reliability
BMW 3 Series vs Lexus IS
How the BMW 3 Series and Lexus IS compare on NHTSA complaints, recalls and crash reports — and which is the lower-risk used buy.
Based on NHTSA owner-complaint & recall records
BMW 3 Series vs Lexus IS: The BMW 3 Series has 306 complaints over 10 years (30.6/yr), while the Lexus IS has only 30 (3.0/yr). BMW owners report engine and electrical failures, including starter issues and smoke, while Lexus owners face engine misfires and transmission hesitation. Source: NHTSA owner complaints.
The picture
Is the BMW 3 Series or Lexus IS more reliable?
A plain-English read on what the NHTSA record says about living with each vehicle.
BMW 3 Series
The BMW 3 Series, over the past decade, has accumulated a high volume of owner complaints, averaging over 30 per year. The most frequent issues center on the engine and electrical system, with owners reporting problems like starter motor failures, smoke from the engine bay, and electrical gremlins. These reports suggest that while the 3 Series offers a premium driving experience, it may demand more frequent repairs and could be prone to unexpected breakdowns, making it a more demanding ownership proposition.
Lexus IS
The Lexus IS, in contrast, has a much lower complaint rate, averaging just 3 per year over the same period. The complaints are spread across several areas, including structure, engine, and fuel system, with a notable pattern of engine misfires and hesitation. While the IS appears to be more reliable overall, the reported issues, especially the engine misfires, are serious and could affect safety, indicating that even a generally reliable model can have significant problems.
The numbers
Side-by-side NHTSA record
Lower is better in every category. The highlighted cell is the stronger result.
| Category | BMW 3 Series | Lexus IS |
|---|---|---|
| Total complaintsAll model years combined | 306 | 30 Better |
| Safety recallsFederal recall campaigns | 1 | 1 |
| Crash reportsCrash-related complaints | 31 | 1 Better |
| Complaints per yearAveraged across model years | 30.6 | 3.0 Better |
| Reported injuriesTied to owner complaints | 23 | 3 Better |
Source: NHTSA owner complaints & recall records.
What actually goes wrong
The problems owners report
The most-complained-about systems on each vehicle — what fails, and what owners say in their own words.
BMW 3 Series
- 01ENGINE90
- 02ELECTRICAL SYSTEM77
- 03UNKNOWN OR OTHER71
- 04AIR BAGS21
- 05POWER TRAIN21
Owners report engine starting problems, including a failed starter motor pinion and reduced auxiliary battery capacity, leading to no-start conditions. There are also reports of smoke coming from the engine bay while driving, which could indicate a fire risk.
Electrical issues are common, with complaints about the vehicle failing to restart after turning off, and the same smoke smell from the engine area. These problems can leave owners stranded and may be linked to the starter relay issue.
Several owners report a 'Passenger Restraint System malfunction' message and a red air bag light, often diagnosed as a wiring harness short. This indicates a potential safety system failure that could prevent air bags from deploying in a crash.
“The contact owns a 2021 BMW 330I. The contact stated while driving 50 MPH and coming to a stop at a red traffic light, the contact started smelling smoke. There was no warning light illuminated. The contact turned off the vehicle, but the vehicle failed to re…”
“1. The engine starter motor (specifically the pinion starter) has failed, and the auxiliary battery is also showing reduced capacity (only a portion of its 660 cold cranking amps). The vehicle is currently at a service center where the technician has diagnose…”
Lexus IS
- 01STRUCTURE7
- 02ENGINE6
- 03FUEL/PROPULSION SYSTEM6
- 04POWER TRAIN5
- 05UNKNOWN OR OTHER4
A recurring and safety-critical defect involves intermittent engine misfires, flashing check engine light, reduced power, and sudden loss of acceleration. Owners report multiple misfire events and shaking, which can be dangerous in traffic.
The engine misfires are also categorized under the fuel/propulsion system, suggesting fuel delivery issues may be the root cause. This can lead to stalling or hesitation, increasing the risk of accidents.
One owner reported that the transmission would not downshift or accelerate when needed, causing a delay in response. This hesitation can be critical when trying to avoid a collision.
“The contact owns a 2025 Lexus IS-350. The contact stated that the vehicle was purchased brand new. The contact stated that within four days of driving the vehicle, the contact started to experience health and safety issues that persisted throughout the time t…”
“The contact owns a 2025 Lexus IS-350. The contact stated that the vehicle was purchased brand new. The contact stated that within four days of driving the vehicle, the contact started to experience health and safety issues that persisted throughout the time t…”
Official recalls
Safety recalls on record
Federal recall campaigns — the defect, the risk, and the fix. Confirm any open recall was completed before you buy.
BMW 3 Series — 1 recall
The defect: 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, M440…
The risk: Transmission oil that leaks into the control unit can lead to a seizure of the transmission gears, causing a sudden loss of drive power and increasing the risk of a crash.
The fix: Dealers will replace the transmission mechatronics module and the automatic transmission fluid, as necessary, free of charge. Owner notification letters were mailed January 26, 2024. Owners may contact BMW customer service at 1-800-525-741…
Lexus IS — 1 recall
The defect: Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2015-2022 Lexus RC, 2016-2020 GS, and 2022 IS vehicles. The low-pressure fuel pump inside the fuel tank may fail.
The risk: Fuel pump failure can cause an engine stall, increasing the risk of a crash.
The fix: Dealers will replace the fuel pump assembly, free of charge. Interim letters notifying owners of the safety risk were mailed June 5, 2026. Additional letters will be sent once the final remedy is available. Owners may contact Toyota's cust…
Buyer analysis
BMW 3 Series or Lexus IS: which should you buy?
The Lexus IS has far fewer complaints per year (3.0 vs 30.6), indicating a significantly lower rate of reported problems. While the BMW 3 Series has more complaints overall, the Lexus IS's issues, particularly engine misfires, are serious and could affect safety. In practice, the Lexus IS is likely to be more reliable, but buyers should be aware of the potential for engine problems.
Key differences
- The BMW 3 Series has a much higher complaint rate (30.6 per year) compared to the Lexus IS (3.0 per year), indicating a higher frequency of reported issues.
- BMW owners frequently report engine and electrical problems, including starter failures and smoke from the engine bay, while Lexus owners report engine misfires and transmission hesitation.
- The BMW has a recall for the transmission control module, while the Lexus has a recall for the fuel pump, both of which are critical components.
- Air bag malfunctions are a notable issue on the BMW, with owners seeing warning lights and potential wiring shorts, while the Lexus has no such complaints.
- Inspect the engine starter and auxiliary battery for signs of failure, as these are common issues that can leave you stranded.
- Check for any signs of electrical problems, such as intermittent warning lights or a burning smell, which could indicate a serious issue.
- Listen for engine misfires or shaking, and check for a flashing check engine light, as these are signs of the recurring engine defect.
- Test the transmission response, especially when accelerating from a stop or during sudden acceleration, to ensure it downshifts promptly.
Before you buy
- Have a mechanic perform a pre-purchase inspection, focusing on the engine and electrical systems for the BMW, and the engine and fuel system for the Lexus.
- Check for any open recalls and ensure they have been addressed by the seller.
- Review the vehicle's service history for any repeated repairs related to the common issues.
- Take a test drive that includes stop-and-go traffic and highway speeds to feel for any hesitation or loss of power.
- Ask the seller for any documentation of recent repairs or diagnostic work.
Year by year
Which model years to avoid
Complaints per model year for both vehicles — lower is better. The spikes are the years to scrutinize.
| Year | BMW 3 Series | Lexus IS |
|---|---|---|
| 2026 | 0 | 0 |
| 2025 | 4 | 3 |
| 2024 | 20 | 2 |
| 2023 | 22 | 8 |
| 2022 | 8 | 8 |
| 2021 | 32 | 2 |
| 2020 | 51 | 4 |
| 2019 | 40 | 2 |
| 2018 | 58 | 0 |
| 2017 | 71 | 1 |
Check the actual car
Comparing models is smart. Checking the VIN is essential.
Brand averages tell you the trend. A VIN check tells you what's wrong with the specific BMW 3 Series or Lexus IS in front of you — accident history, open recalls and title records.
Go deeper
Full reliability reports
- Comparison
- BMW 3 Series vs Lexus IS
- BMW 3 Series total complaints
- 306
- Lexus IS total complaints
- 30
- BMW 3 Series total recalls
- 1
- Lexus IS total recalls
- 1
- BMW 3 Series avg complaints/year
- 30.6
- Lexus IS avg complaints/year
- 3.0
- More reliable overall
- Lexus IS
- BMW 3 Series top complaint area
- ENGINE
- Lexus IS top complaint area
- STRUCTURE