Tesla Battery Warranty Explained: Mileage limits & 70% cap

When purchasing a vehicle—whether electric or internal combustion—the manufacturer’s warranty represents your primary defense against unexpected and costly repair bills. Because the battery pack is the single most expensive component of an electric vehicle, understanding the terms, conditions, and limitations of your battery warranty is critical. For Tesla owners and used buyers, navigating the warranty policy can seem complex. In this guide, we’ll explain the specifics of the Tesla battery warranty, analyze the mileage limits and the 70% capacity cap, discuss what voids the coverage, and outline what happens when you file a warranty claim.

Table of Contents

1. Basic vs. High Voltage Warranty Structure
2. Model-by-Model Warranty Terms
3. Legacy vs. Modern Tesla Warranties
4. Understanding the 70% Capacity Cap
5. Warranty Summary Table
6. What Happens When a Claim is Approved?
7. What Voids the Battery Warranty?
8. Case Study: Jason’s Warranty Experience
9. Tips for Used Tesla Buyers
10. Frequently Asked Questions

Basic vs. High Voltage Warranty Structure

Tesla divides its vehicle coverage into two distinct policies: the Basic Vehicle Limited Warranty and the High Voltage Battery & Drive Unit Limited Warranty. The Basic Vehicle Warranty is a standard bumper-to-bumper policy that covers the vehicle’s cabin components, electronics, suspension, and body hardware for 4 years or 50,000 miles (whichever comes first). This covers items like door handles, screen glitches, and window regulators.

The High Voltage Battery & Drive Unit Warranty is a separate, much longer policy that specifically protects the battery pack, drive motors, and high-voltage wiring. Because these components are designed for longevity and represent the core powertrain of the vehicle, Tesla extends coverage for 8 years, with mileage limits that vary depending on the specific vehicle model and trim. This ensures that even after the bumper-to-bumper warranty expires, the most expensive parts of the car remain covered.

Model-by-Model Warranty Terms

Tesla’s battery warranty terms are not identical across its fleet. Rather, they are structured to reflect the battery capacity, chemistry, and target vehicle segments. Below is the detailed breakdown of the warranty terms for each modern Tesla platform:

• Model 3 Rear-Wheel Drive (Standard Range LFP): Covered for **8 years or 100,000 miles** (160,000 km), whichever comes first, with a guarantee of retaining a minimum of **70%** of its battery capacity over that period.
• Model 3 Long Range & Performance (NCA): Covered for **8 years or 120,000 miles** (192,000 km), whichever comes first, with a guarantee of retaining a minimum of **70%** of its battery capacity.
• Model Y (All Trims – RWD, Long Range, Performance): All Model Y configurations carry a warranty of **8 years or 120,000 miles** (192,000 km), whichever comes first, with a guarantee of retaining a minimum of **70%** of its battery capacity.
• Model S & Model X (All Trims): As premium luxury models, the Model S and Model X carry a longer mileage limit of **8 years or 150,000 miles** (240,000 km), whichever comes first, with a guarantee of retaining a minimum of **70%** capacity.
• Cybertruck (All Trims): The steel exoskeleton truck carries a warranty of **8 years or 150,000 miles** (240,000 km), whichever comes first, with a guarantee of retaining a minimum of **70%** capacity.

Legacy vs. Modern Tesla Warranties

If you are shopping in the used market, it is important to know that early Model S and Model X vehicles built between 2012 and 2019 carried a very different warranty policy. For these legacy vehicles, Tesla offered an **8-year, unlimited-mileage warranty** on the battery pack and drive unit (for configurations with 85 kWh packs or larger). There was no mileage cap, meaning high-mileage drivers were fully protected for 8 years.

However, there was a major catch: these legacy warranties did **not** include a capacity retention guarantee. The warranty only covered complete battery failures (where the pack became inoperable or threw a major fault code). If a 2015 Model S 85 experienced severe degradation and lost 40% of its range, but the battery pack remained operational, Tesla would refuse to replace it under warranty because there was no capacity cap. In 2020, Tesla standardized its modern policies by adding the 100,000 to 150,000-mile caps but introducing the 70% capacity retention guarantee to protect owners against extreme range loss.

Understanding the 70% Capacity Cap

The 70% capacity retention cap is the most discussed aspect of the modern warranty. It means that if your battery’s physical State of Health (SOH) degrades below 70% of its original factory capacity during the 8-year window, you are entitled to a warranty replacement.

Determining whether your battery has dropped below this threshold involves more than simply reading the estimated range on the dashboard. The BMS’s range estimate can fluctuate based on driving style and temperature. To officially file a warranty claim, Tesla will run remote diagnostics and analyzing vehicle log history. If the logs indicate that the battery’s SOH is consistently below 70%, they will approve the claim. As explained in our degradation calculator guide, owners can run the Battery Health Test in Service Mode to see their exact SOH before scheduling a service visit.

Warranty Summary Table

The table below summarizes the battery and drive unit warranty terms across the 2026 Tesla lineup:

What Happens When a Claim is Approved?

If your battery pack fails completely or drops below 70% SOH, and Tesla approves your warranty claim, it is crucial to understand what you will receive. Many owners assume they will get a brand-new, 100% capacity battery pack. However, the fine print of Tesla’s warranty document states otherwise:

“The replacement battery pack may not be brand new, and its capacity may be restored to at least 70% capacity or equal to a typical battery of that age/mileage before the failure occurred.”

In practice, this means that Tesla will typically install a **remanufactured (refurbished) battery pack**. For example, if your Model 3 pack fails at 95,000 miles, Tesla will replace it with a refurbished pack that has been balanced and tested to have a capacity equivalent to a typical 95,000-mile vehicle (usually between 80% and 88% SOH). While you do not get a brand-new battery, you get a fully functional, safe pack that matches your car’s age, restoring your vehicle to operational condition at no cost.

Additionally, the replacement pack **does not reset the warranty**. The new battery is only covered for the remainder of the vehicle’s original 8-year or mileage-capped warranty. If your battery is replaced at year 7 and 90,000 miles, the replacement pack is only covered for the remaining 1 year or 10,000 miles.

What Voids the Battery Warranty?

While the warranty is comprehensive, Tesla outlines several exclusions that will void your coverage. If a battery fails due to any of the following reasons, the owner is responsible for the full out-of-warranty replacement cost:

• Negligent Deep Discharge (Bricking): If you leave your Tesla parked for an extended period with 0% state of charge, the battery will continue to experience minor self-discharge. If it drops below its absolute low-voltage safety threshold, the cells will suffer permanent damage. Tesla’s warranty documents explicitly state that leaving the vehicle unplugged for more than 14 days after the battery reaches 0% is considered owner negligence and is not covered.
• Extreme Temperature Exposure: Exposing the vehicle to ambient temperatures above 140°F (60°C) or below -22°F (-30°C) for more than 24 hours at a time will void the warranty. While the vehicle is designed to manage its own temperature using active cooling/heating, it cannot do so indefinitely if left unplugged in extreme climates.
• Unauthorized Servicing or Modifications: If anyone other than a Tesla-certified technician opens the battery pack or modifies high-voltage components, the warranty is voided. This includes installing aftermarket electronics that tap directly into the high-voltage lines or attempts by independent shops to repair the pack internally.
• Physical Damage, Collision, and Water Ingress: Damage caused by accidents, road debris, bottoming out over speed bumps, driving through deep floods, or exposure to fire is not covered by Tesla’s warranty. As explained in our battery replacement cost guide, physical damage should be claimed under your comprehensive auto insurance policy rather than Tesla’s warranty.

Case Study: Jason’s Warranty Experience

Let’s look at the real-world experience of Jason, an Uber driver in Atlanta, Georgia, who navigated a warranty claim on his 2020 Model 3 Long Range.

Jason drove his vehicle extensively, accumulating 112,000 miles by late 2025. Over the course of a few weeks, he noticed his maximum highway range dropping rapidly, eventually capping at just 190 miles on a full charge (representing roughly 61% of the original 310-mile capacity). He entered Service Mode and ran the Battery Health Test, which confirmed a State of Health of **64.0%**. The test also flagged a cell voltage mismatch in Module 3.

Jason scheduled an appointment via the Tesla mobile app and uploaded screenshots of the Service Mode test. The service center pre-ordered a replacement pack and requested that Jason bring the car in. Because the car was under the 120,000-mile cap and within the 8-year window, the claim was approved. Tesla kept the car for 4 days, providing Jason with an older Model S loaner vehicle. They installed a remanufactured 75 kWh pack. When Jason picked up the car, his SOH was **86.5%**, restoring his full charge range to 268 miles. The total invoice was $0.00, and his replacement pack is covered for the remaining 8,000 miles of his original warranty. This case study demonstrates that Tesla does honor its 70% capacity guarantee, but owners must monitor their SOH to catch issues before the mileage cap is exceeded.

Tips for Used Tesla Buyers

If you are shopping for a used Tesla, the remaining battery warranty is the single most important factor determining the vehicle’s value. Follow these guidelines to protect yourself:

1. Verify the In-Service Date: The 8-year warranty begins on the date the vehicle was first delivered to its original buyer, not the model year. A 2018 Model 3 delivered in December 2018 is covered until December 2026, whereas one delivered in May 2018 is only covered until May 2026. You can find this date by looking at the vehicle history report or asking Tesla to verify the VIN.
2. Check the Mileage Carefully: Remember the mileage limits: 100k miles for RWD Model 3, 120k miles for Long Range Model 3/Y, and 150k miles for Model S/X. If a used Model Y has 118,000 miles, you only have 2,000 miles of warranty protection left. Factor this risk into your offer.
3. Request a Service Mode SOH Printout: Never buy a used Tesla out of warranty, or close to its limit, without checking the battery health. Ask the seller to enter Service Mode and show you the Battery Health screen, or run the test yourself during a pre-purchase inspection to verify that the SOH is not hovering just above the 70% threshold.

Frequently Asked Questions