Last updated: 2026-03-28
BMW IX vs Lexus RX: Reliability Compared
BMW IX
Lexus RX
Choosing between the BMW IX and the Lexus RX? This page compares their reliability scores, NHTSA recall history, owner-reported complaints, and estimated annual repair costs so you can make a confident long-term ownership decision between these two midsize suvs.
Our reliability scores are based on NHTSA recall and complaint data, independent repair cost estimates, and sales-normalized complaint rates. The Lexus RX currently leads with an average score of 86/100 compared to 56/100. Scroll down for the full year-by-year breakdown, common problem areas, and repair cost comparison.
How Do the BMW IX and Lexus RX Generations Compare?
Verdict
The Lexus RX is more reliable than the BMW IX, scoring 86/100 vs 56/100.
The Lexus RX demonstrates superior reliability with an average score of 85/100 compared to the BMW IX's 56/100. Despite having more recalls over a longer period, the RX maintains a lower complaint rate of 7.5 per 10,000 sold versus the IX's 18.8. Both vehicles face issues with electrical systems and airbags, but the RX's broader ownership base and lower complaint frequency underscore its dependability. While specific repair costs are not available, the data clearly favors the Lexus RX for reliability in the midsize SUV segment.
Key Differences
- 1Lexus RX scores 30 points higher in reliability
- 2BMW IX has 15 fewer total recalls
- 3Lexus RX has 11.3 fewer complaints per 10k sold
Category Scoreboard
BMW IX vs Lexus RX: Which Is More Reliable?
What Are the Common Problems With the BMW IX and Lexus RX?
The Lexus RX and BMW IX exhibit distinct problem profiles despite differing in total complaint volume. The Lexus RX, with 729 complaints, shows notable issues in air bags and electrical systems, with air bags being the most frequently reported category and linked to 11 crashes. In contrast, the BMW IX, with only 94 complaints, has its highest concern in the electrical system, though it's the vehicle speed control and forward collision avoidance systems that stand out with higher crash-linked incidents relative to their complaint numbers. Both brands face challenges with their power trains, but the BMW IX's issues in safety-critical systems like vehicle speed control and forward collision avoidance may be of greater concern due to the higher proportion of crash-linked complaints.
| Component | BMW IX | Lexus RX |
|---|---|---|
| ELECTRICAL SYSTEM | 4.4Average | 0.5Very Low |
| UNKNOWN OR OTHER | 2.4Low | 0.6Very Low |
| AIR BAGS | 2Low | 0.8Very Low |
| VEHICLE SPEED CONTROL | 1.8Low | 0.1Very Low |
| STEERING | 1.8Low | —None |
| POWER TRAIN | 1.6Low | 0.2Very Low |
| FORWARD COLLISION AVOIDANCE | 1.2Low | —None |
| SERVICE BRAKES | 0.6Very Low | 0.2Very Low |
| FUEL/PROPULSION SYSTEM | —None | 0.2Very Low |
| STRUCTURE | —None | 0.2Very Low |
| ENGINE | —None | 0.2Very Low |
| FUEL SYSTEM | —None | 0.1Very Low |
| TIRES | —None | 0.1Very Low |
| VISIBILITY/WIPER | —None | 0.1Very Low |
| SEAT BELTS | —None | —None |
| LANE DEPARTURE | —None | —None |
Complaints per 10,000 units sold, aggregated across all tracked model years from NHTSA owner reports.
How Does BMW IX vs Lexus RX Reliability Compare by Year?
| Year | BMW IX | Lexus RX | Edge |
|---|---|---|---|
| 2024 | 60/1004R / 30C | 85/1009R / 48C | Lexus RX |
| 2023 | 56/10012R / 35C | 85/1005R / 45C | Lexus RX |
| 2022 | 52/10011R / 29C | 90/1000R / 35C | Lexus RX |
Best years to cross-shop: The 2024 BMW IX scored 60/100 and the 2022 Lexus RX scored 90/100 — these represent the strongest model years in our tracking range.
Who Should Buy the BMW IX vs the Lexus RX?
BMW IX vs Lexus RX: Common Questions
- Is the BMW IX more reliable than the Lexus RX?
- Based on our data, the Lexus RX is more reliable with an average score of 86/100 compared to 56/100. That's a significant difference worth considering.
- Which has more recalls, the BMW IX or the Lexus RX?
- The Lexus RX has more recalls (42) compared to the BMW IX (27). More recalls don't always mean worse reliability — some are minor — but it's worth reviewing what each recall covers.
- Which has fewer owner complaints, the BMW IX or the Lexus RX?
- Adjusted for sales volume, the Lexus RX has a lower complaint rate at 7.5 per 10,000 sold versus 18.8 for the BMW IX. This per-sales normalization gives a fairer comparison than raw totals.
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How We Calculate Reliability Scores
Auto Reliability Index scores are calculated on a 0–100 scale using a weighted formula that combines multiple public data sources. Each factor is weighted based on its predictive value for real-world ownership experience.
Key Ranking Factors
Complaint Severity
NHTSA owner complaints weighted by component category (e.g., powertrain, safety systems, electronics, cosmetic) — safety-critical issues carry more weight than cosmetic ones. Adjusted for sales volume so high-volume models aren't unfairly penalized.
Repair Costs
Independent reliability ratings based on repair frequency, average repair costs, and severity of typical repairs for each model.
Recall Impact
Number of NHTSA recalls weighted by severity. “Stop driving” and fire-risk recalls are penalized more heavily than minor software or labeling recalls.
Issue Diversity
Measures how many major vehicle systems (engine, transmission, electrical, braking, etc.) have recorded complaints. A vehicle with issues spread across many systems may indicate systemic quality issues.
Scores are grouped into four tiers:
- 80–100: Excellent — Top-tier reliability, minimal issues
- 60–79: Good — Reliable with some minor concerns
- 40–59: Mixed — Notable issues, research before buying
- 0–39: Risky — Significant problems, proceed with caution
Data is sourced from NHTSA recall records, owner complaint filings, and independent repair databases. Scores are recalculated as new data becomes available. While the weighting model is proprietary, all underlying data sources are public and traceable.
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