AI Damage2021 Polaris Slingshot: common problems
Owners of the 2021 Polaris Slingshot filed 2 complaints with NHTSA, most often about engine and fuel/propulsion system. The maker issued 43 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 2
- involving a crash
- 1
- Technical service bulletins (TSB)
- 43
What fails most often
- 1 Engine 50% of all complaints
- 2 Fuel/propulsion system 50% of all complaints
- 3 Seat belts 50% of all complaints
- Engine: 1 complaints (50% of all), 1 of them with a crash reported by the owner; manufacturer bulletins for this component: 5.
- Fuel/propulsion system: 1 complaints (50% of all).
- Seat belts: 1 complaints (50% of all).
Symptoms owners describe
How many of the 2 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 1 | 1 | 5 |
| Fuel/propulsion system | 1 | 0 | 0 |
| Seat belts | 1 | 0 | 0 |
| Electrical system | 0 | 0 | 22 |
| Equipment | 0 | 0 | 8 |
| Powertrain | 0 | 0 | 7 |
| Steering | 0 | 0 | 3 |
| Electronic stability control | 0 | 0 | 2 |
| Exterior lighting | 0 | 0 | 2 |
| Structure | 0 | 0 | 2 |
| Engine and cooling | 0 | 0 | 1 |
| Service brakes | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
| Wheels | 0 | 0 | 1 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
The contact stated that while driving at approximately 20 MPH, the oil, brake, ABS, check engine, and traction control warning lights illuminated. The contact stated that the vehicle then accelerated inadvertently and swayed back and forth, and when the brake pedal was depressed, the vehicle did not slow down as…
Seat belts drivers and passengers do not adjust, lock where you cannot pull out to buckle the belt,locks while pulling out. Also doesnt lock snug against body when buckled. Throttle bucks violently when lettling clutch out gentlly causing a stall condition when pulling into traffic.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 19,879 of 36,656 model years in the NHTSA data (among the 46% least complained about).
On average one model year of the Slingshot has 9 complaints (10 years in the data). This year has 2, below average.
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
- Seat belts. Belt pretensioners after airbag deployment, SRS codes.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This Ask Polaris article provides information regarding engine valve guide wear inspection and measurement…
This Ask Polaris article provides information regarding engine valve guide wear inspection and measurement for Slingshot vehicles.
- This Slingshot help center article provides information regarding how to change the transmission fluid on…
This Slingshot help center article provides information regarding how to change the transmission fluid on model year 2020 and newer Slingshot with AutoDrive vehicles.
- Submitting a Debug Report immediately after a Digital Wrench II incident is strongly recommended
Digital Wrench II errors may be caused by vehicle module issues, software or equipment malfunctions, or interruptions during updates and flash procedures. Common causes include poor internet connectivity, low vehicle…
- This Ask Polaris article provides information to systematically identify the root cause of excessive…
This Ask Polaris article provides information to systematically identify the root cause of excessive exhaust smoke by distinguishing between oil consumption, coolant intrusion, and fuel-related conditions.
- This Ask Polaris article provides information about how to perform a leakdown test on Polaris Slingshot…
- This Slingshot help center article provides information regarding the creation of RIDE COMMAND log files…
This Slingshot help center article provides information regarding the creation of RIDE COMMAND log files to assist troubleshooting software errors.
- A new input shaft seal, PN 3610429, has been released for Model Year 2015-2026 Slingshot right angle…
A new input shaft seal, PN 3610429, has been released for Model Year 2015-2026 Slingshot right angle drives for improved leak resistance. Vehicles produced after 11/10/2025 have the updated seal. When installing, this…
- This Slingshot help center article provides details for changing the engine oil on model year 2020+…
- This Slingshot help center article provides information regarding the procedure to replace the…
This Slingshot help center article provides information regarding the procedure to replace the transmission fluid on Model Year 2020 and newer Slingshot vehicles.
- This Slingshot help center article provides information regarding battery maintenance on Model Year 2020+…
- This Slingshot help center article provides information regarding Angle Drive fluid replacement on…
This Slingshot help center article provides information regarding Angle Drive fluid replacement on vehicles equipped with AutoDrive.
- This Slingshot help center article provides information regarding maintenance and adjustment of the…
This Slingshot help center article provides information regarding maintenance and adjustment of the headlamps on 2020+ Slingshot vehicles.
NHTSA lists 43 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2021 Polaris Slingshot?
Owner complaints to NHTSA most often mention: engine, fuel/propulsion system, seat belts. Total complaints: 2. The most frequent symptoms in complaint texts: seat belts (50%), stalls while driving (50%), warning lights, check engine (50%).
How many service bulletins (TSB) were issued for the 2021 Polaris Slingshot?
NHTSA lists 43 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2021 Polaris Slingshot from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2021 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.