Most Tesla owners don’t know this — and it costs them. When you trade an internal combustion vehicle for an electric vehicle, the rules of the road change completely. You might ask yourself: do Teslas have engines?
The short answer is no. Teslas do not have traditional gas engines, spark plugs, or oil pans. Instead, they use powerful electric motors powered by high-voltage battery packs. But while you don’t have to worry about replacing a timing belt, treating your modern EV like an old gas car often leads to ignored maintenance tasks and costly battery degradation. Understanding how your EV’s drivetrain actually works is the key to saving money and keeping your car on the road for years.
The Hidden Costs of Ignoring Your EV Motor and Battery
When you switch from a gas car to a Tesla, you leave behind oil changes, transmission fluid, and exhaust systems. However, replacing a traditional gas engine costs a fraction of what it costs to replace a high-voltage battery pack or an electric drive unit out of warranty. The problem is that many drivers assume an EV is completely maintenance-free, leading to neglect.
If you ignore the specific needs of your electric motor and battery, you risk accelerated battery degradation, severely reduced driving range, and premature drivetrain wear. You might also find yourself waiting much longer at Superchargers because a poorly maintained battery takes longer to accept a charge. Failing to care for your EV’s “engine” doesn’t just hurt your daily driving experience; it actively destroys your vehicle’s resale value.
7 Practical Tips to Protect Your Tesla’s Electric Motor
Keeping your EV in peak condition requires a different mindset. Here are seven practical tips to maintain your Tesla motor and battery to avoid expensive pitfalls.
1. Trust the Thermal Management System
What to do: Allow your Tesla to automatically manage its own battery and motor temperature, even when parked. Turn off features that restrict climate control if you are in extreme heat or cold, as the car needs that system to cool the drivetrain.
Why it matters: The “engine” in a Tesla is an electric motor and a lithium-ion battery pack. Both generate significant heat during operation. Unlike a traditional engine that relies solely on a radiator, a Tesla uses an active liquid cooling system. If you try to manually override HVAC settings to save energy, you might inadvertently prevent the car from cooling the battery.
How much it saves/protects: Allowing the thermal management system to run properly prevents extreme thermal stress, protecting thousands of dollars in battery capacity and preventing motor overheating.
2. Stick to the 20-80% Charging Rule
What to do: Set your daily charge limit in the Tesla app or on your car’s screen to 80% and only charge to 100% right before a long road trip. If you want to dive deeper into battery limits, read our guide on whether it is okay to never charge a Tesla to 100%.
Why it matters: Lithium-ion batteries are under the highest physical and chemical stress when they are sitting at full charge or completely empty. The battery cells degrade much faster when parked at 100% for days or weeks.
How much it saves/protects: Following this charging habit significantly slows battery degradation. By protecting your battery health, you preserve up to 10% of your usable capacity over a five-year period, saving you from early battery replacement costs.
3. Maximize Regenerative Braking
What to do: Keep your regenerative braking set to “Standard” in the driving settings. Learn to drive with one pedal and avoid using the physical brake pedal unless you need to stop quickly.
Why it matters: When you lift your foot off the accelerator, the electric motor switches into a generator. It catches the kinetic energy of the car and feeds it back into the battery. This process naturally slows the car down without using the physical brake pads. It also serves as a cooling mechanism for the motor drivetrain during descent.
How much it saves/protects: It drastically extends brake pad life, often pushing brake replacements past 50,000 miles. It also recaptures energy, giving you free range and saving hundreds of dollars in brake maintenance.
4. Precondition the Battery Before Fast Charging
What to do: Always navigate to a Supercharger using the in-car navigation system at least 15–20 minutes before you arrive.
Why it matters: Electric motors and batteries operate best at specific temperatures. When you navigate to a Supercharger, the car automatically warms up the battery to accept a fast charge. A cold battery cannot accept high charging speeds and will throttle your kW intake to protect the cells from damage.
How much it saves/protects: Preconditioning cuts your charging time in half during winter months and prevents cold-weather charging penalties that wear out the battery faster. You save time and protect the internal chemistry of your battery pack.
5. Monitor Your Tires to Protect the Motor
What to do: Check your tire pressure monthly using the Tesla app and physically rotate your tires every 6,000 to 8,000 miles.
Why it matters: Do Teslas have engines that create instant torque? Yes, and that instant electric motor torque wears tires down noticeably faster than a gas car. Underinflated tires cause your electric motors to work harder to push the vehicle, increasing motor heat and energy consumption. Misaligned wheels cause aggressive wear on the inner edges, leading to blowouts.
How much it saves/protects: Proper tire maintenance aligns the drivetrain and extends tire life by up to 10,000 miles, saving you $600 on a set of EV-rated tires while reducing motor strain.
6. Clear Debris from the Underbody and Vents
What to do: Visit a touchless car wash or carefully rinse the undercarriage of your Tesla once a month, especially if you live in an area with snow, salt, or heavy dust.
Why it matters: The electric motor and battery cooling fins sit underneath the car. If you drive through mud or road debris, these cooling passages can get blocked. If the system cannot pull in cool air, the motor will enter a thermal limiter mode to protect itself, severely reducing your acceleration and top speed.
How much it saves/protects: A clean underbody prevents limp mode, protects your high-voltage connections from corrosive salt, and ensures your thermals run efficiently during summer road trips.
7. Listen for Unusual Motor Humming
What to do: Turn off the radio and the air conditioning once a week, and listen carefully to how your car sounds when accelerating from a dead stop.
Why it matters: The electric motor in a Tesla is whisper quiet, but it is not completely silent. A healthy motor produces a faint, smooth whine. If you start hearing a loud, grinding hum or a vibration that feels like a cell phone buzzing under your seat, you might have an early drivetrain bearing issue.
How much it saves/protects: Catching a faulty motor bearing early allows you to file a warranty claim before the part fails completely. This saves you from a massive out-of-pocket drivetrain replacement.
What NOT to Do with a Tesla Motor
While maintaining an EV is generally easier than taking care of a gas car, there are specific things you should avoid doing at all costs:
Zero-Cost Checks You Can Do Today
You don’t need to visit a service center to make your Tesla safer and more efficient. Here are three quick wins you can execute right now for free:
- Set your charge limit to 80%: Open your Tesla app, swipe to charge settings, and drag the slider to 80%. This single action protects your battery pack from daily stress.
- Check your tire pressure: Open the service menu on your touchscreen. If any tire is more than 5 PSI below the recommended level, inflate it at a gas station. You instantly extend your range and protect your motor.
- Test your regenerative braking: On your drive home, find an empty straight road and take your foot off the accelerator. Ensure the car slows down smoothly without applying the physical brakes. If it rolls, check your regen settings.
Frequently Asked Questions
Do Tesla cars have engines or motors?
Tesla cars have electric motors, not internal combustion engines. A Model 3 or Model Y typically features a single rear motor (or dual motors for all-wheel drive), which draws power from a lithium-ion battery pack rather than burning gasoline.
Do Teslas need oil changes?
No. Because Teslas do not have gas engines, they do not require engine oil changes. However, the electric drivetrain does have gear oil, but it is designed to last the lifetime of the car under normal driving conditions.
How long do Tesla electric motors last?
Tesla electric motors are rated to last between 300,000 and 500,000 miles, significantly outlasting traditional internal combustion engines. The battery pack usually degrades before the physical motor fails.
Bottom Line
Do Teslas have engines? No, they use highly efficient electric motors that require zero oil changes or spark plugs. However, the highest-impact action you can take as an owner is to respect your battery’s thermal and charging limits. Setting your daily charge limit to 80% and allowing the car’s cooling system to do its job will save you thousands of dollars in battery degradation and keep your EV running flawlessly for years.
