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Cross-shopped · different DNA · Different vehicle types but commonly cross-shopped

2015 INFINITI Q50 vs 2015 Mercedes-Benz C-Class

Reliability comparison based on NHTSA recall and complaint records.

Synced 2026-06-14 Source: NHTSA public records Reviewed by ASE-certified contributors
Quick verdict
2015 INFINITI Q50 and 2015 Mercedes-Benz C-Class solve the same problem differently

Buyers cross-shop these two but they're built around different priorities. The 2015 INFINITI Q50 scores 3.9 on reliability data; the 2015 Mercedes-Benz C-Class scores 3.5. Which one fits depends more on what you actually need from the vehicle than which one has a slightly higher score. We'll show you the data on both — your use case decides the rest.

2015 INFINITI Q50

3.9/5
Reliability score
120 complaints
0 recalls (0 critical)
$6,450 repair exposure
vs

2015 Mercedes-Benz C-Class

3.5/5
Reliability score
432 complaints
0 recalls (0 critical)
$13,800 repair exposure

Stories from the shop

Buyers cross-shop the 2015 INFINITI Q50 and the 2015 Mercedes-Benz C-Class but they're solving slightly different problems. The reliability data tells you what breaks on each one. The right pick depends on which set of trade-offs fits your actual driving more than which score is higher.

If you lean 2015 INFINITI Q50, know what you're getting into on powertrain and brakes. Those categories have noticeably more complaints than the 2015 Mercedes-Benz C-Class sees, and they're not cheap items when they go.

Going with the 2015 Mercedes-Benz C-Class? Watch the engine and body. The 2015 INFINITI Q50 has fewer reports in those categories, so you'd be trading one set of weak spots for another.

On the dollars-and-cents side, total repair exposure across the top problem areas runs 2.1x higher on the 2015 Mercedes-Benz C-Class. That's the number to keep in mind when you're pricing the deal — a $2,000 difference in purchase price disappears the first time you're staring at a transmission rebuild.

Bottom line: pick based on use case more than the spec sheet. If you tow heavy and don't want to think about it, that's one calculation. If you're a daily driver and want the cheapest path forward, that's another. Both of these will get you down the road. We're just telling you where each one is most likely to break.

— ProblemsByVin editorial team, drawing on the NHTSA data and shop experience.

Side-by-side by problem area

Category
2015 INFINITI Q50
2015 Mercedes-Benz C-Class
engine
No reports
97 reports
moderate · ~$3,100
body
No reports
65 reports
moderate · ~$1,500
electrical
8 reports
severe · ~$850
47 reports
severe · ~$850
powertrain
34 reports
moderate · ~$2,500
20 reports
moderate · ~$2,500
steering
25 reports
severe · ~$700
28 reports
severe · ~$700
airbags
16 reports
severe · ~$1,100
18 reports
severe · ~$1,100
suspension
No reports
24 reports
moderate · ~$900
visibility
No reports
13 reports
moderate · ~$350
brakes
8 reports
severe · ~$450
No reports
cruise control
7 reports
moderate · ~$600
No reports

Common questions

Which is more reliable, the 2015 Infiniti Q50 or the 2015 Mercedes-Benz C-Class?

Based on the NHTSA data we track, the 2015 Infiniti Q50 comes out ahead with a reliability score of 3.9 versus 3.5. The margin is narrow, so the verdict could shift if you weight specific categories differently or factor in your own use case.

What goes wrong more often on the 2015 Infiniti Q50?

Compared to the 2015 Mercedes-Benz C-Class, the 2015 Infiniti Q50 sees more reported issues in powertrain and brakes. That doesn't mean it's a bad truck — it means those are the categories worth budgeting for if you go that direction.

What goes wrong more often on the 2015 Mercedes-Benz C-Class?

Compared to the 2015 Infiniti Q50, the 2015 Mercedes-Benz C-Class has more complaints in engine and body. Whether that's a deal-breaker depends on the cost and severity — see the comparison table above for repair cost ranges.

Which has more recalls?

Both vehicles have 0 active recalls. Total recall count alone isn't a great signal — what matters is severity. See the recall counts by severity in the comparison table.

Is an extended warranty worth it on either of these?

Both vehicles are out of factory bumper-to-bumper coverage at this point. Combined repair exposure across the top problem categories runs around $13,800 on the higher-risk vehicle. A quality service contract typically costs $1,800–3,500 over 3 years, so a single major failure usually pays for the contract. The math favors warranty coverage on whichever vehicle you choose, especially if you plan to keep it past 100,000 miles.

Related comparisons

Reliability scores, complaint counts, and severity ratings derived from the NHTSA public records database. Verify each vehicle's federal record: 2015 INFINITI Q50 on NHTSA · 2015 Mercedes-Benz C-Class on NHTSA. "Repair exposure" is the sum of average independent-shop repair costs across each vehicle's tracked problem categories and is intended as a relative comparison, not an exact prediction. Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics. Some links on this page are affiliate links.
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