2021 Mercedes-Benz S-class: common problems and reliability
The 2021 Mercedes-Benz S-class has 66 owner-filed NHTSA complaints and 0 recalls on record. The most-reported areas are electrical system and wheels.
Safety record for the 2021 model year
66
Owner complaints
0
Recalls
4
Crash reports
0
Fire reports
Source: NHTSA complaints and recalls filed for 2021 Mercedes-Benz S-class vehicles (US, public record).
Is 2021 a good year for the S-class?
Across the 17 S-class model years we track, complaint volume runs from 13 (2009) to 133 (2002). With 66 complaints, the 2021 S-class sits abovethe model's median of 33.
These are raw NHTSA complaint totals, not adjusted for how many cars sold or how long each model year has been on the road. Older and higher-selling years accumulate more complaints.
Where owners report problems
electrical system
20
wheels
12
forward collision avoidance
10
engine and engine cooling
10
engine
6
What owners say across generations
\nSentiment is mixed and heavily dependent on the specific generation and model year. Long-term owners of the W222 generation (2014-2020) report high satisfaction with its comfort, luxury, and reliability, with one owner noting over…
\nWater intrusion leading to electrical faults (CAN bus failures): potential for no-start conditions and dead screens. Frequency: recurrent.\n\nM278 V8 engine concerns (pre-2015 W222): potential for cylinder wall scoring, particularly in cylinder 5. Frequency: recurrent.\n\nAir suspension failures: components can fail, leading to a sagging or bouncy ride, especially at higher mileages (around 60k+ miles). Frequency: recurrent.\n\nExcessive screen/tech-centric interior (W223): criticism of cheap-looking, poorly integrated screens that replace traditional luxury materials and design. Frequency: very frequent.\n\nHomogenized design language: the S-Class is criticized for losing its unique, grand appearance and looking too similar to cheaper models like the A-Class. Frequency: recurrent.\n\nHigh tire wear: noted as a common wear item. Frequency: isolated.\n\nRemarks\nOwner feedback is sharply divided by generation. The W220 (1999-2005) is noted as potentially the least reliable modern S-Class. The W222 is widely regarded as a high point for reliability and owner satisfaction. The launch of the W223 represents a significant philosophical shift for the brand, moving decisively towards digital interiors, which has alienated a portion of the traditional S-Class buyer base. Discussions frequently compare the S-Class to its electric sibling, the EQS, which is seen as a different vehicle targeting a different experience, often at a significant price premium. Analysis based on approximately 15 substantive owner discussions across multiple generations.