Mercedes-Benz C-Class vs Hyundai Ioniq 6

A data-driven comparison of two real rivals — pulling reliability scores, RepairPal repair costs, and the most-reported issues. Rivalry score: 80/100. Both are midsize sedans with luxury features, targeting similar demographics.

Mercedes-Benz C-Class

Reliability score82/100
RepairPal rating3.5/5
Recent US sales91,281
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Hyundai Ioniq 6

Reliability score82/100
RepairPal rating3.5/5
Recent US sales1,288,843
See full Hyundai Ioniq 6 reliability →

Verdict: Mercedes-Benz C-Class vs Hyundai Ioniq 6

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.

Reliability problem analysis

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.

Which one to buy

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.

Check a specific Mercedes-Benz C-Class or Hyundai Ioniq 6 by VIN

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