2021 Tesla Model S Reliability ReportCommon Problems, Repair Costs & Expert Verdict
Quick Facts · 2021 Tesla Model S
- Has 24 NHTSA recalls on record — the most notable involves the electrical system:adas:autonomous/self driving:software.
- Scores 10 points below the strongest nearby year — the 2020 Tesla Model S earns a 82.
- The system most likely to surface first: electrical & infotainment (moderate severity).
Should You Buy the 2021 Tesla Model S?
The 2021 Tesla Model S offers exhilarating performance and cutting-edge technology, making it a compelling choice for the digitally inclined. However, prospective buyers must be prepared for potential electrical gremlins and inconsistent build quality that can lead to unexpected repair costs, requiring a proactive approach to ownership and maintenance.
The 2021 Tesla Model S is an undeniably exciting and technologically advanced vehicle, perfect for those who crave performance and cutting-edge features. However, its history of electrical issues and concerns over long-term air suspension costs mean a thorough pre-purchase inspection and a clear understanding of its…
Best Model Years
2021 (Plaid refresh models), 2019+ (for MCU2 and improved general reliability).
Years to Avoid
Pre-2016 models due to numerous early production issues and MCU1 limitations.
Biggest Strengths
- Revolutionary EV powertrain reliability
- Robust Supercharger network availability
- Continuous over-the-air (OTA) software improvements
Top Risk Areas
The systems that tend to fail first on the 2021 Tesla Model S, with the typical mileage window when each becomes a concern. Detailed repair-cost ranges and exact what-to-check inspection notes are in the full report.
While improved from earlier models, the large central Media Control Unit (MCU) can still experience software glitches, slowness, or in rare cases, hardware failure. Sensor issues related to Autopilot/Full Self-Driving systems and door ha…
The adaptive air suspension, while comfortable, is prone to component wear, particularly control arm bushings. Air struts and the compressor can also develop leaks, leading to sagging or operational issues, often exacerbated by the vehic…
Owners frequently report minor issues such as panel gap inconsistencies, wind noise from poor seals, trim pieces coming loose, and misaligned charging ports. These are often cosmetic but point to inconsistent manufacturing tolerances.
2021 Tesla Model S Mileage Danger Zones
The mileage windows when the 2021 Tesla Model S most commonly needs attention. Plan ahead, budget accordingly, and inspect before you cross each threshold.
Initial Sorting Zone
At this mileage, any initial manufacturing defects, early software bugs, or minor electrical glitches (e.g., phantom drain) should have manifested. It's also a good time to check for early suspension bushing wear.
Component Wear Check
Around this point, inspect suspension components thoroughly for control arm wear. Electrical system components, particularly the MCU, may begin to show signs of age or intermittent issues. Battery health should still be excellent.
Elevated System Risk
Beyond 90k miles, the likelihood of air suspension component failure (compressor, struts) increases. While still rare, drive unit issues become a slightly higher consideration. Battery degradation, though slow, will start to become more…
High Risk / Major Overhaul Zone
At this mileage, major high-voltage components like the battery or drive units, while still largely warrantied or very rare failures, become a higher statistical risk. Air suspension will almost certainly require significant attention. R…
2021 Tesla Model S Ownership Cost Outlook
What it typically costs to keep the 2021 Tesla Model S on the road. Full 5-year cost-of-ownership projection and major-failure-risk forecast are in the report.
Annual Maintenance
$200-500 (basic checks, tire rotation, cabin filter)
Moderate Repairs
$1,000-3,000 (e.g., MCU replacement, suspension work) occasionally
How Long Does the 2021 Tesla Model S Last?
Early mileage 2021 Model S units benefit from remaining warranty coverage and the latest software, making them a safer bet. High mileage examples (over 80,000 miles) demand rigorous inspection, especially of the battery health and suspension components, as major repairs can be costly out of warranty.
What 2021 Tesla Model S Owners Actually Say
What Owners Love
- Mind-bending acceleration and impressive performance metrics.
- Extensive Supercharger network provides unmatched long-distance travel convenience.
- Regular over-the-air (OTA) software updates continuously improve features and performance.
- Sleek, minimalist interior design with a large, responsive central display.
Common Frustrations
- Inconsistent build quality, often leading to rattles, panel gaps, and minor trim issues.
- Service experience can be inconsistent, with long wait times for appointments and parts.
- High cost of out-of-warranty repairs for complex electrical or suspension components.
- Phantom drain can reduce parked range, especially if Sentry Mode or preconditioning are active.
Who Should Buy the 2021 Tesla Model S?
Best For
- Tech enthusiasts who embrace innovation and frequent software updates.
- Performance-oriented drivers seeking exhilarating acceleration and handling.
- Commuters with reliable home charging infrastructure.
Not Ideal For
- Budget-conscious buyers wary of high potential repair costs post-warranty.
- Owners who expect flawless traditional luxury car build quality and fit-and-finish.
How the 2021 Tesla Model S Compares to Rivals
The Model S excels in electric powertrain performance and charging infrastructure but often lags its traditional luxury competitors in conventional build quality, interior finish, and long-term repair predictability for its complex electronics.
More Reliable Than
- Mercedes-Benz EQS (for raw acceleration and established charging network)
- Porsche Taycan (for range and practicality)
- Lucid Air (for current market availability and proven track record)
Comparable To
- Audi E-Tron GT (in luxury EV segment for performance and tech)
- Mercedes-Benz S-Class (for luxury features, but not reliability)
NHTSA Recalls
24 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
ELECTRICAL SYSTEM:ADAS:AUTONOMOUS/SELF DRIVING:SOFTWARE
Tesla, Inc. (Tesla) is recalling certain 2016-2022 Model S and Model X, 2017-2022 Model 3, and 2020-2022 Model Y vehicles. The "rolling stop" functionality available as part of the Full Self-Driving (Beta) software may allow the vehicle to travel through an all-way stop intersection without first coming to a stop.
AIR BAGS
Tesla, Inc. (Tesla) is recalling certain 2021 Model X and Model S vehicles. The driver's air bag cushion may tear during deployment.
What breaks on the 2021 Tesla Model S?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
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Tesla Model S by Year
Compare KeepScores across nearby years of the Tesla Model S. Click any year for its full report.
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