Is the Hyundai Ioniq 6 more reliable than the Mercedes-Benz C-Class?

Based on our data, the Hyundai Ioniq 6 is more reliable with an average score of 77/100 compared to 55/100. That's a significant difference worth considering.

Which has more recalls, the Hyundai Ioniq 6 or the Mercedes-Benz C-Class?

The Mercedes-Benz C-Class has more recalls (767) compared to the Hyundai Ioniq 6 (13). 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 Hyundai Ioniq 6 or the Mercedes-Benz C-Class?

Adjusted for sales volume, the Hyundai Ioniq 6 has a lower complaint rate at 0.9 per 10,000 vehicles sold versus 18.3 for the Mercedes-Benz C-Class. Normalizing by sales gives a fairer comparison than raw totals.

Last updated: 2026-07-17

Hyundai Ioniq 6 vs Mercedes-Benz C-Class: Reliability Compared

More Reliable

Hyundai Ioniq 6

Good

Mercedes-Benz C-Class

Mixed

Choosing between the Hyundai Ioniq 6 and the Mercedes-Benz C-Class? 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. The Hyundai Ioniq 6 currently leads with an average score of 77/100 compared to 55/100. Scroll down for the full year-by-year breakdown, common problem areas, and repair cost comparison.

How Do the Hyundai Ioniq 6 and Mercedes-Benz C-Class Generations Compare?

As of 2026, the Mercedes-Benz C-Class is in its fifth generation, which debuted in 2022. This generation is still relatively new, potentially leading to typical first-year issues as the platform matures. The previous generation, W205, ran from 2015 to 2021, with a significant facelift in 2018, allowing the model to benefit from improved reliability over time. In contrast, the Hyundai Ioniq 6 is in its first generation, launched in 2023, with a facelift occurring in 2025. Being early in its lifecycle, the Ioniq 6 may also encounter initial teething problems. However, the recent facelift might address some early issues, providing a more refined experience. Buyers should consider these factors when evaluating reliability.

Verdict

The Hyundai Ioniq 6 is more reliable than the Mercedes-Benz C-Class, scoring 77/100 vs 55/100.

The Hyundai Ioniq 6 outperforms the Mercedes-Benz C-Class in terms of reliability, with a significantly higher average reliability score of 75/100 compared to the C-Class's 51/100. The Ioniq 6 has just 13 recalls over four years, while the C-Class has experienced 767 recalls across eight years. Additionally, the Ioniq 6 has a much lower owner complaint rate, with only 0.9 complaints per 10,000 units sold versus the C-Class's 18.3. These factors, coupled with fewer common issues reported for the Ioniq 6, make it the more reliable choice between the two midsize sedans.

Key Differences

1Hyundai Ioniq 6 has 754 fewer total recalls
2Hyundai Ioniq 6 scores 22 points higher in reliability
3Hyundai Ioniq 6 has 17.4 fewer complaints per 10k sold

Category Scoreboard

3Hyundai Ioniq 6

—

0Mercedes-Benz C-Class

Reliability ScoreTotal RecallsComplaint Rate

Hyundai Ioniq 6 vs Mercedes-Benz C-Class: Which Is More Reliable?

Hyundai Ioniq 6 vs Mercedes-Benz C-Class at-a-glance reliability comparison
Metric	Hyundai Ioniq 6	Mercedes-Benz C-Class
Reliability Score	77/100	55/100
Years Tracked	4	8
Total Recalls	13	767
Complaints per 10k Sold	0.9	18.3
Year Wins	2 (1 tied)	0 (1 tied)

What Are the Common Problems With the Hyundai Ioniq 6 and Mercedes-Benz C-Class?

The Mercedes-Benz C-Class exhibits a higher volume of complaints, particularly in the electrical system and engine categories, with 323 and 231 complaints, respectively. Notably, the C-Class has a significant number of crash-linked complaints in the steering and service brakes categories, totaling 13 and 10, respectively, indicating potential safety concerns. Conversely, the Hyundai Ioniq 6 has fewer total complaints, with the majority involving the electrical system, but only one crash-linked incident in this category. The Ioniq 6's problem profile is less severe overall, with minimal issues in critical areas such as the powertrain and steering, and only two crash-linked complaints in vehicle speed control.

Hyundai Ioniq 6 vs Mercedes-Benz C-Class common problem areas comparison
Component	Hyundai Ioniq 6	Mercedes-Benz C-Class
ELECTRICAL SYSTEM	0.5Very Low	2.7Low
UNKNOWN OR OTHER	0.1Very Low	1.8Low
ENGINE	—None	1.9Low
POWER TRAIN	0.1Very Low	1.2Low
STEERING	—None	0.8Very Low
SERVICE BRAKES	—None	0.5Very Low
STRUCTURE	—None	0.5Very Low
VEHICLE SPEED CONTROL	—None	0.4Very Low
FUEL SYSTEM	—None	0.4Very Low
AIR BAGS	—None	0.4Very Low
FORWARD COLLISION AVOIDANCE	—None	0.3Very Low
WHEELS	—None	0.2Very Low
FUEL/PROPULSION SYSTEM	—None	0.1Very Low
TIRES	—None	0.1Very Low
SUSPENSION	—None	0.1Very Low
ENGINE AND ENGINE COOLING	—None	0.1Very Low
VISIBILITY	—None	0.1Very Low
VISIBILITY/WIPER	—None	—None
SEATS	—None	—None

Complaints per 10,000 units sold, aggregated across all tracked model years from NHTSA owner reports.

How Does Hyundai Ioniq 6 vs Mercedes-Benz C-Class Reliability Compare by Year?

Hyundai Ioniq 6 vs Mercedes-Benz C-Class year-by-year reliability scores
Year	Hyundai Ioniq 6	Mercedes-Benz C-Class	Edge
2026	82/1000R / 0C	82/1000R / 0C	Tie
2024	77/1005R / 33C	69/1007R / 20C	Hyundai Ioniq 6
2023	69/1005R / 54C	53/10083R / 209C	Hyundai Ioniq 6

Best years to cross-shop: The 2026 Hyundai Ioniq 6 scored 82/100 and the 2026 Mercedes-Benz C-Class scored 82/100 — these represent the strongest model years in our tracking range.

Who Should Buy the Hyundai Ioniq 6 vs the Mercedes-Benz C-Class?

If you prioritize reliability and peace of mind, the Hyundai Ioniq 6 is your best choice. With a reliability score of 75/100, it significantly outperforms the Mercedes-Benz C-Class. The Ioniq 6 has only 13 recalls compared to the C-Class's staggering 767, and just 0.9 owner complaints per 10,000 sold, indicating higher owner satisfaction and fewer issues. If you are drawn to luxury and brand prestige, and you are willing to potentially deal with more frequent issues, the Mercedes-Benz C-Class might appeal to you. However, be prepared for its lower reliability score of 51/100 and common problems related to the electrical system and engine. This model may suit you if you have access to reliable maintenance services and are less concerned about recall frequency and owner complaints.

Hyundai Ioniq 6 vs Mercedes-Benz C-Class: Common Questions

Is the Hyundai Ioniq 6 more reliable than the Mercedes-Benz C-Class?: Based on our data, the Hyundai Ioniq 6 is more reliable with an average score of 77/100 compared to 55/100. That's a significant difference worth considering.
Which has more recalls, the Hyundai Ioniq 6 or the Mercedes-Benz C-Class?: The Mercedes-Benz C-Class has more recalls (767) compared to the Hyundai Ioniq 6 (13). 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 Hyundai Ioniq 6 or the Mercedes-Benz C-Class?: Adjusted for sales volume, the Hyundai Ioniq 6 has a lower complaint rate at 0.9 per 10,000 vehicles sold versus 18.3 for the Mercedes-Benz C-Class. Normalizing by sales gives a fairer comparison than raw totals.

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More Mercedes-Benz C-Class comparisons

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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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