Here are the findings from a J.D. Power study that identify the five most reliable Mercedes-Benz models, based on owner feedback over the past three years.

1. Mercedes-Benz C-Class

Overall score: 81/100

Quality and reliability rating: 84/100

Despite a major update in 2022, the 2023 C-Class emerged as the brand's most reliable model, thanks to early production issues being resolved. Owners praised its mini-S-Class interior styling and relaxed driving feel, earning it 82 out of 100 points in those areas.

Some owners noted drawbacks, including the MBUX infotainment system's complex initial setup and a sensitive brake pedal. The C300 with its 2.0-liter turbocharged four-cylinder engine was singled out by owners as the most reliable powertrain option.

2. Mercedes-Benz GLE

Overall score: 79/100

Quality and reliability rating: 80/100

The GLE continues to be a dependable crossover, outscoring all other Mercedes SUVs in quality. Owners gave high marks to its accurate voice commands—a rarity in voice-controlled systems—and its customizable digital instrument cluster. However, the large 21-inch wheels generate extra noise on certain surfaces, and the suspension can feel bouncy over bumps.

The GLE450 was praised for the smooth performance of its 3.0-liter six-cylinder engine. Overall, it drew fewer complaints than the smaller GLE350 with its 2.0-liter four-cylinder.

3. Mercedes-Benz E-Class

Overall score: 79/100

Quality and reliability rating: 80/100

These scores reflect owner experiences with the latest W213-generation E-Class. This model was refined over many years before an updated version arrived in 2024, resulting in high marks for reliability and driving comfort. Highlights include exceptionally comfortable seats and a more intuitive interior design compared to newer models.

Common criticisms were limited trunk space for such a large sedan and occasional issues with wireless Apple CarPlay connectivity. The reliable 2.0-liter turbocharged four-cylinder in the E350 was considered the most dependable available engine.

4. Mercedes-Benz GLS

Overall score: 75/100

Quality and reliability rating: 78/100

The GLS is the brand's top-selling large SUV, though its rating is weighed down by complex air suspension components that may need early repairs. It scored well for its S-Class-like luxurious cabin and quiet ride.

Some owners wanted more small-item storage, and the slow-moving power-folding rear seats annoyed those who used the feature regularly. A low resale value score of 67 out of 100 dragged down the overall result, but the GLS remains a compelling used buy. The GLS 580 with its large V8 offers serious power, while the inline-six GLS 450 is better for those looking to save on maintenance.

5. Mercedes-Benz GLC

Overall score: 77/100

Quality and reliability rating: 74/100

The 2023 GLC referenced in this survey is the previous-generation X253 model. Thanks to proven technology and years of updates, it earned higher quality and reliability scores than the new GLC.

Drawbacks of the older design include an infotainment system that feels dated next to the latest models and less cargo space than most key rivals. For minimal upkeep, the GLC300 with its 2.0-liter turbo engine and time-tested 9-speed automatic is an excellent choice.