Before you buy a used Tesla, it is important to check battery health. Buying a used Tesla can be a great decision, especially with how well these vehicles hold their value and performance over time. But before committing, there’s one thing you should never overlook: the battery.

Unlike traditional cars, a Tesla’s battery is its most important component. It has a direct influence on the distance you can cover, the efficiency of the vehicle’s operation and finally the value you are getting. The positive thing is that Tesla batteries are designed to last, although it is important to know the state of their batteries prior to purchasing.

You can read our guide on whether a used Tesla is worth it in Canada as well, in case you are still contemplating whether a Tesla is the right car.

Check Battery Health with the Full Charge Range

A simple way to get an idea of battery condition is by looking at the estimated range when the vehicle is fully charged.

When the Tesla has been charged to 100 percent, the figure displayed on the screen can provide you with an idea of the battery’s current range. However, the displayed range is not a precise measurement of battery health because it can also be affected by software calibration, weather, wheel size, and driving settings. The best approach is to compare the displayed range with the original rated range when new and combine that with a battery health report or inspection.

To illustrate, if a Tesla Model 3 Long Range originally had a range of more than 500 km and now displays approximately 440 to 460 km at a full charge, that may still be considered normal depending on the age, mileage, configuration, and condition of the vehicle.

What you would not want to see is a big reduction that does not reflect the vehicle age and mileage. This is particularly relevant when comparing two or more choices of our used Tesla inventory.

Check Battery Health with a Battery Health Report

A battery health report, should it be available, is a more accurate way to assess the battery.

Some dealerships offer third party battery diagnostics which indicate the remaining capacity of the battery and the general state of the battery. This provides you with a better idea than the estimated range on the screen.

When purchasing a vehicle through a dealership that provides this degree of accountability, it is a great indicator that they are confident in the quality of their cars.

Pay Attention During Charging

Battery condition also shows up in how the car charges.

When doing a test or demonstration, observe whether the charging process is stable and consistent. There should be no sudden changes in speed or stops when an electric vehicle is being charged.

When you are new to buying an EV, it is also a good idea to know how to charge in Canada and what it is like in everyday life.

Observe the Drive, Not Just the Specs

Taking the car for a drive can reveal more than numbers on a screen.

When you are driving, you can notice the way the energy gets consumed. When the range appears to deplete unusually quick or the performance does not feel as you would expect of a Tesla, then it might be worth inquiring further.

This step is equally significant as the knowledge of financing to buyers who are comparing the options. In case you intend to finance your car, you can also read our car loan APR guide to have a better idea on how to budget your monthly expenses.

Understand the Battery Warranty

One of the biggest advantages of buying a used Tesla is that many of them are still covered under battery warranty.

Tesla has traditionally provided an 8-year warranty on the battery and drive unit, although the kilometre limit varies by model and trim. In addition, Tesla’s warranty generally guarantees that the battery will retain at least 70 percent of its original capacity during the warranty period.

When you are reading about ownership costs, you also want to read about the entire process of owning and purchasing a vehicle in Canada, including ownership and delivery.

Check Battery Health by Understanding How the Car Was Used

Battery health is not only about time, but also about habits.

Vehicles that were primarily charged at home and not regularly kept at 100 percent charge may experience slower long-term battery degradation. Frequent fast charging and repeatedly charging or storing the battery at very high charge levels may contribute to slightly faster battery wear over time.

This is similar to how vehicle condition affects value when trading in or selling your car.

Know What’s Normal

The idea of battery degradation is frightening, however, in practice, it is not something to be afraid of.

Research suggests that many electric vehicle batteries lose capacity gradually over time. According to Geotab’s analysis of more than 22,000 electric vehicles, average battery degradation is approximately 2.3 percent per year, although the actual amount varies depending on the vehicle, climate, charging habits, mileage, and use.

A small decrease in range over time is normal and does not necessarily mean the vehicle is not worth buying. The most important thing is that any reduction happens gradually rather than suddenly.

Final Thoughts

The process of evaluating the battery health of a used Tesla does not necessarily have to be complex.

By checking the estimated full-charge range, reviewing a battery health report, understanding the warranty, and paying attention during a test drive, you can make a much more informed decision.

Looking at all of these factors together will help you buy with confidence and choose a Tesla that will continue to perform well for years to come.

Looking for a Used Tesla You Can Trust?

All Teslas at Planet Motors are thoroughly checked and clearly displayed, so you can see what you are getting.

You can also:

• Start your financing application
• Check trade-in value
• Or message us directly to confirm battery condition on any vehicle

Frequently Asked Questions