Last updated: 2026-07-26
KIA K5 vs Subaru Legacy: Reliability Compared
KIA K5
Subaru Legacy
Choosing between the KIA K5 and the Subaru Legacy? 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 sedans.
Our reliability scores are based on NHTSA recall and complaint data, independent repair cost estimates, and sales-normalized complaint rates. Both models currently share an average reliability score of 75/100. Scroll down for the full year-by-year breakdown, common problem areas, and repair cost comparison.
How Do the KIA K5 and Subaru Legacy Generations Compare?
Verdict
The KIA K5 and Subaru Legacy are evenly matched with a reliability score of 75/100.
Both the KIA K5 and Subaru Legacy score an identical 75 out of 100 in average reliability, but differences emerge in specific areas. The KIA K5 has a lower owner complaint rate at 10.2 per 10,000 sold compared to the Legacy's 21.2, despite having one more recall over a shorter period. However, the Legacy offers more transparency with an estimated annual repair cost of $563, which the K5 lacks. While both vehicles share common issues in the electrical system, the K5 also faces challenges in power train and fuel systems, whereas the Legacy struggles more with visibility and engine-related problems.
Key Differences
- 1KIA K5 has 11.0 fewer complaints per 10k sold
- 2Subaru Legacy has 1 fewer total recalls
Category Scoreboard
KIA K5 vs Subaru Legacy: Which Is More Reliable?
| Metric | KIA K5 | Subaru Legacy |
|---|---|---|
| Reliability Score | 75/100 | 75/100 |
| Years Tracked | 6 | 8 |
| Total Recalls | 20 | 19 |
| Complaints per 10k Sold | 10.2 | 21.2 |
| Safety RatingNHTSA overall | 2026 NHTSA | 2025 NHTSA |
| Frontal | ||
| Side | ||
| Rollover | ||
| Year Wins | 0 | 5 |
What Are the Common Problems With the KIA K5 and Subaru Legacy?
The KIA K5 and Subaru Legacy present distinct problem profiles, with the KIA K5 experiencing significant issues in the air bags category, where 19 out of 23 complaints are crash-linked, indicating a potential safety concern. In contrast, the Subaru Legacy has a pronounced problem with its visibility/wiper systems, accounting for 139 complaints, but fewer of these are crash-linked. The electrical system is a common issue for both models, with 62 complaints for the KIA K5 and 97 for the Subaru Legacy, although the Subaru has a higher volume of complaints. Notably, the Subaru Legacy's vehicle speed control issues are more frequently linked to crashes, with 7 of 11 complaints indicating a risk, which is less pronounced in the KIA K5's problem profile.
| Component | KIA K5 | Subaru Legacy |
|---|---|---|
| VISIBILITY/WIPER | 0.1Very Low | 6.5Average |
| ELECTRICAL SYSTEM | 1.7Low | 4.5Average |
| UNKNOWN OR OTHER | 0.8Very Low | 3.6Average |
| POWER TRAIN | 1.2Low | 0.4Very Low |
| FUEL/PROPULSION SYSTEM | 1.2Low | 0.3Very Low |
| ENGINE | 0.6Very Low | 0.5Very Low |
| AIR BAGS | 0.6Very Low | 0.4Very Low |
| VISIBILITY | —None | 0.9Very Low |
| STRUCTURE | 0.6Very Low | 0.1Very Low |
| STEERING | 0.4Very Low | 0.3Very Low |
| VEHICLE SPEED CONTROL | 0.2Very Low | 0.5Very Low |
| FUEL SYSTEM | 0.6Very Low | —None |
| SERVICE BRAKES | 0.3Very Low | 0.2Very Low |
| FORWARD COLLISION AVOIDANCE | 0.1Very Low | 0.2Very Low |
| TIRES | 0.1Very Low | —None |
| WHEELS | 0.1Very Low | —None |
Complaints per 10,000 units sold, aggregated across all tracked model years from NHTSA owner reports.
Which Is Cheaper to Maintain: KIA K5 or Subaru Legacy?
How Does KIA K5 vs Subaru Legacy Reliability Compare by Year?
| Year | KIA K5 | Subaru Legacy | Edge |
|---|---|---|---|
| 2025 | 79/1002R / 29C | 80/1000R / 6C | Subaru Legacy |
| 2024 | 77/1002R / 20C | 81/1000R / 16C | Subaru Legacy |
| 2023 | 71/1004R / 81C | 77/1002R / 10C | Subaru Legacy |
| 2022 | 69/1005R / 106C | 77/1002R / 32C | Subaru Legacy |
| 2021 | 71/1006R / 132C | 75/1003R / 31C | Subaru Legacy |
Best years to cross-shop: The 2025 KIA K5 scored 79/100 and the 2024 Subaru Legacy scored 81/100 — these represent the strongest model years in our tracking range.
Who Should Buy the KIA K5 vs the Subaru Legacy?
KIA K5 vs Subaru Legacy: Common Questions
- Is the KIA K5 more reliable than the Subaru Legacy?
- They're very close — both average 75/100 in our reliability scoring. Other factors like repair costs and specific year models may tip the decision.
- Which has more recalls, the KIA K5 or the Subaru Legacy?
- The KIA K5 has more recalls (20) compared to the Subaru Legacy (19). 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 KIA K5 or the Subaru Legacy?
- Adjusted for sales volume, the KIA K5 has a lower complaint rate at 10.2 per 10,000 vehicles sold versus 21.2 for the Subaru Legacy. Normalizing by sales gives a fairer comparison than raw totals.
- Is the KIA K5 or Subaru Legacy safer?
- Both the KIA K5 and Subaru Legacy received the same NHTSA overall safety rating of 5/5 stars. Check the frontal, side, and rollover sub-ratings above for a more detailed comparison.
Related Reliability Comparisons
More KIA K5 comparisons
Decided between KIA K5 and Subaru Legacy? Run a VIN check before you buy — uncover hidden accidents, title issues, and open recalls.
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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.
See incorrect data? Report an issue