2014 Tesla Model S fuel/propulsion system problems
23 owner complaints filed with NHTSA name the fuel/propulsion system on the 2014 Tesla Model S — 6% of all complaints for this model year.
What owners report
“After a high-voltage junction box repair performed by Tesla, the vehicle shut down 15 miles after leaving the service center. Tesla replaced the high-voltage harness at no cost but provided no explanation. After the HV harness replacement, new proximity/sensor alerts began triggering that were not…”
filed Nov 22, 2025
“The drive unit was leaking coolant into the electrical inverter space. The issue was verified by a mechanic who then repaired the drive unit to prevent additional coolant intrusion.”
filed Jan 17, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other Model S years
| Year | Reports | Share |
|---|---|---|
| 2023 Model S | 2 | 2% |
| 2020 Model S | 1 | 1% |
| 2018 Model S | 2 | 1% |
| 2017 Model S | 8 | 2% |
| 2016 Model S | 15 | 2% |
| 2015 Model S | 32 | 5% |
| 2013 Model S | 24 | 5% |
| 2012 Model S | 2 | 3% |
Other reported problem areas on the 2014 Tesla Model S
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.