Tesla cars are becoming increasingly popular with taxi and shuttle services, which squeeze a lot out of their vehicles in short periods of time, giving us a good idea of how these cars can handle high mileage.
Tesloop, a car-sharing service in Southern California, has shared data from a Model S after reaching 400,000 miles.
Less than a year ago, we already talked about one of Tesloop’s Tesla Model S having reached 300,000 miles in just 2 years. The company commented that the car alone had saved them approximately $60,000 in fuel and maintenance compared to a similar car for its shuttle service, which operates primarily from Los Angeles to Las Vegas.
Now Tesloop’s first Model S, a 90D they called the eHawk, has surpassed 400,000 miles (643,737 km), enough to make it the world’s highest-mileage Tesla.
The company made its maintenance costs for the eHawk public in a blog post:
Tesloop has had a combined maintenance cost of about $19,000 or about $ 0.05 / mile. This cost breaks down into $6,700 for general repairs and $12,200 for scheduled maintenance. The full service log for the Model S is available here. The record includes comparable estimated costs of running the service with a Lincoln Town Car instead of a Model S or Mercedes GLS-class instead of a Model X. Tesloop estimates the combined cost of maintaining a Lincoln Town Car or Mercedes-class GLS is around $88,500 ($ 0.22 / mile) and $98,900 ($ 0.25 / mile) respectively over 400,000 miles.
Many people are probably interested in knowing how the battery performed. It was replaced twice during this period.
The first battery change was after 194,000 miles. At the time, the battery capacity degradation was ~ 6%, which is reasonable, but Tesla encountered a problem due to frequent Tesloop overcharging. This is the reason why Tesla changed the battery:
An internal battery imbalance was found due to consistent overcharging at 100% of a low state of charge (SOC) with no rest period in between. The HV battery has been approved for replacement. We also recommend that the client do not overcharge regularly and do not charge 100% regularly. We also recommend that the customer use scheduled charging to start charging 3 hours after completing the trip with a low SOC.
Tesloop says it was overcharging the car several times a day and with a 95-100% state of charge, two things Tesla does not recommend for battery pack health.
The second battery pack change occurred at 324,000 miles and Tesloop says it experienced a much more aggressive battery degradation of ~ 22%.
Tesla said there was a problem:
Diagnostics show that the battery assembly is not working properly. The battery assembly was removed and replaced. Replaced with a permanent 90 kw battery. Firmware updated to ensure proper communications. Upon completion, a test run was performed to confirm that the problem had been resolved.
Tesla repairs and reuses parts of its old battery packs, which in this case were exchanged under warranty.
As for the interior, Tesloop says it has proven to “hold up well”:
As you can see, the Model S eHawk is one of the rare Tesla sedans equipped with the “executive rear seats,” which was briefly released in 2015.
In line with the claw shown by this vehicle in its day-to-day filming on Californian asphalt, a user record points out that the Tesla Model S and X maintain their batteries at 80% after 840,000 kilometers traveled, which would indicate that the eHawk milestone will be pointed out by more models from the company led by Elon Musk.