Lexus IS vs BMW 4-Series

A data-driven comparison of two real rivals — pulling reliability scores, RepairPal repair costs, and the most-reported issues. Rivalry score: 80/100. Strong alternatives in the luxury midsize sedan segment with similar buyer profiles.

Lexus IS

Reliability score87/100
RepairPal rating4.5/5
Recent US sales40,375
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BMW 4-Series

Reliability score64/100
RepairPal rating3.0/5
Recent US sales91,659
See full BMW 4-Series reliability →

Verdict: Lexus IS vs BMW 4-Series

The BMW 4-Series shows an unusual data profile with an average reliability score of 0/100 and no recorded recalls, owner complaints, or identified issues, which suggests either a lack of data or an anomaly. In contrast, the Lexus IS has a solid average reliability score of 82/100, with 0.7 complaints per 10,000 units sold and six recalls over nine years, indicating a more typical reliability performance with some areas of concern such as structure and tires. Despite the higher recall rate, the Lexus IS's established reliability score and low complaint rate per sales volume make it a more reliable choice in this comparison. Without independent repair cost estimates available for either, the Lexus IS's track record provides a clearer picture of reliability.

Reliability problem analysis

The BMW 4-Series has no recorded complaints, indicating a potentially strong reliability profile, though the absence of data precludes a detailed analysis of specific issues. In contrast, the Lexus IS has 44 complaints, with notable concerns in the structure, tires, and unspecified categories. The tire-related complaints are significant, with one linked to a crash, which may suggest a potential safety issue that the BMW 4-Series does not appear to share. Overall, while the Lexus IS shows some areas of concern, especially regarding tire safety, the BMW 4-Series lacks sufficient complaint data to draw direct comparisons in problem severity.

Which one to buy

If you prioritize reliability and a proven track record, the Lexus IS is a strong contender. With a reliability score of 82/100 and only 0.7 owner complaints per 10,000 sold, it offers peace of mind for those who value long-term dependability. While the Lexus IS has had six recalls, these do not overshadow its overall reliability and are balanced by its solid performance in other areas. If you want a car with a known history of addressing and resolving issues, the Lexus IS is a solid choice.

On the other hand, if you're drawn to the BMW 4-Series, it's important to consider its current reliability score of 0/100. While it has no recalls or owner complaints, the absence of detailed repair data means you might be stepping into unknown territory. This model might appeal to those who are brand loyal to BMW and are willing to take a chance on a newer model without a clearly defined reliability history. However, proceed with caution and consider potential future repair costs and reliability issues.

Check a specific Lexus IS or BMW 4-Series by VIN

Reliability tells you the average. A VIN check tells you about the exact vehicle.