Ownership Guide

Battery Health and Warranty

The quick answer

Is my Tesla battery losing too much range?

Displayed miles alone do not prove a fault, and some capacity loss with age and use is normal. Current general Tesla battery coverage is 8 years with mileage limits of 100,000, 120,000 or 150,000 miles depending on the vehicle, with a minimum 70 percent retention for qualifying models. Your vehicle's own warranty is authoritative.

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A lower number on the screen is not a diagnosis, and a warranty is not a promise of replacement. Here is how to read the signals, document a concern and let Tesla's process do its job.

By
Tesla Owners Club of Austin
Sources checked
Review
Not reviewed by a human expert

The short version

  • Some capacity loss with age and use is normal. Displayed miles alone do not prove a fault.
  • Follow the charge limit guidance on your vehicle's charging screen. It reflects your battery chemistry, so there is no universal 80 or 100 percent rule.
  • Current general Tesla battery coverage is 8 years with mileage limits of 100,000, 120,000 or 150,000 miles depending on the vehicle, with a minimum 70 percent retention for qualifying models.
  • The warranty supplied with your specific vehicle is authoritative. Claims are reviewed by Tesla and are not guaranteed.

01

What the range number on your screen means

The miles shown next to the battery icon are an estimate. Tesla's range guidance explains that speed, temperature, climate use, wheels, tires and cargo all change real consumption. That page explains range factors in general; it is not a tool for diagnosing battery degradation from displayed miles.(Source: Tesla Support: Range (opens in a new tab))

Common reasons the number changes (not all mean capacity loss)
What you seePossible everyday causesWhen to look closer
Lower number on a hot Austin afternoonBattery temperature and estimate behaviorIf it persists across seasons and charge levels
Trip uses more than the display predictedSpeed, headwind, cabin cooling, hillsUse the Energy app and trip prediction instead
Number drops while parkedSentry Mode, climate, preconditioningUnexplained persistent loss with features off
Gradual reduction over yearsNormal age and use related capacity lossA sudden change, warning messages or alerts

02

Charge limits: follow your car, not a slogan

Tesla vehicles use different battery chemistries and configurations. The charging screen in your vehicle shows the recommended daily limit for that battery, and some batteries are recommended to be charged to full regularly while others are not. A higher limit for a road trip is a different situation from leaving the car full for an extended period. Use the guidance shown in your own car and its manual.(Source: Tesla Support: Range (opens in a new tab); Tesla Model Y Owner's Manual (2025+, North America) (opens in a new tab))

For long parking periods, such as airport trips, follow the storage guidance in your manual, keep a reasonable reserve, and account for energy used by security or climate features. During Central Texas summers, shade and plugged in preconditioning help comfort; the club's heat guide covers this in more depth.

03

How the battery warranty is structured

Tesla's current general U.S. terms list a basic vehicle limited warranty of 4 years or 50,000 miles, whichever comes first. Battery and drive unit coverage is 8 years with a mileage limit that differs by vehicle: 100,000, 120,000 or 150,000 miles. For qualifying models, the terms include a minimum 70 percent battery capacity retention over the warranty period.(Source: Tesla Support: Vehicle Warranty (opens in a new tab))

Those are current general terms. Older vehicles may have different coverage, and this guide does not map today's trim names onto earlier cars. The warranty supplied with your vehicle, which you can view in the Tesla app under Specs and Warranty, then Warranty, is the authoritative document.(Source: Tesla Support: Vehicle Warranty (opens in a new tab))
Illustrative only: reading coverage from your own documents
QuestionWhere to find the answerWhy it matters
When did coverage start?Warranty view in the Tesla app or original documentsTime limits run from the in service date, not your purchase date
What is the mileage limit for this VIN?The warranty for your exact vehicleLimits differ across vehicles
Does a retention threshold apply?The battery section of your warrantyIt applies to qualifying models under stated terms
What is excluded?Exclusions sectionDamage, misuse and improper repair are treated differently from defects

04

Warranty coverage vs normal wear

Current general U.S. terms list a 4 year or 50,000 mile basic limited warranty, and 8 year battery coverage with a 100,000, 120,000 or 150,000 mile limit depending on the exact configuration, with a minimum 70 percent capacity retention for eligible vehicles. Normal wear is distinct from a defect, and Tesla decides each claim under the warranty for your specific VIN.(Source: Tesla Support: Vehicle Warranty (opens in a new tab); Tesla New Vehicle Limited Warranty (U.S., PDF) (opens in a new tab))

What a warranty may cover vs normal wear (general guide only)
SituationLikely categoryWhat to check
Gradual range reduction over yearsOften normal age and use related capacity lossWhether a diagnosis is warranted; the display is not a capacity test
Warning message or sudden large changePossible defect for Tesla to assessRequest service and keep photos of the alert
Tires, wiper blades, brake padsNormal wear items under typical termsThe exclusions and wear sections of your warranty
Damage from collision, misuse or improper repairUsually treated differently from defectsThe exclusions section for your VIN
Component failure inside time and mileage limitsMay be covered if Tesla confirms a covered conditionIn service date and mileage limit for your exact vehicle
Assumptions: Categories are general. Coverage is never automatic, and this table does not grant or deny any right; your VIN's warranty and Tesla's diagnosis control.(Source: Tesla Support: Vehicle Warranty (opens in a new tab); Tesla New Vehicle Limited Warranty (U.S., PDF) (opens in a new tab))

Run a warranty assessment before contacting Service

  1. Open the Tesla app, go to Specs and Warranty, then Warranty, and note the in service date and limits for your VIN.
  2. Compare your current age and mileage against those limits.
  3. Read the battery, exclusions and wear sections of the warranty document for your vehicle.
  4. Record the symptom with date, charge level, temperature and any alert text. For safety warnings or a sudden malfunction, follow the vehicle's instructions and contact Service promptly; do not keep driving just to collect observations.
  5. Request service in the app, describe the pattern, and keep every estimate and diagnosis note.

Assumptions: A lower displayed range alone is not a capacity diagnosis, and a claim is not approved until Tesla reviews it.(Source: Tesla Support: Vehicle Warranty (opens in a new tab); Tesla New Vehicle Limited Warranty (U.S., PDF) (opens in a new tab))

05

A hypothetical warranty timeline

Hypothetical example: checking where a car stands
  1. A car's warranty, viewed in the app, shows battery coverage of 8 years or a hypothetical 120,000 miles from its in service date.
  2. The car is 5 years from that date and has 70,000 miles. Both are inside the stated limits.
  3. The owner notices a gradual lower displayed range. That alone is not a warranty claim, because displayed miles are an estimate.
  4. The owner records observations and contacts Tesla Service, which decides whether diagnosis is warranted.

Being inside the time and mileage limits means the warranty may apply if Tesla determines a covered condition exists. It does not mean a replacement will happen.

Assumptions: All figures are illustrative. Use the warranty for your exact VIN. Tesla reviews claims and applies its own terms and diagnosis.

06

If you are worried about your battery

Document, then contact Tesla Service

  • Note dates, charge levels, outside temperature and what the display showed, on several occasions.
  • Write down any alerts or warning messages exactly as shown, with photos.
  • Check your warranty in the app under Specs and Warranty, then Warranty.
  • Request service in the Tesla app and describe the pattern, not just one reading.
  • Keep copies of estimates, diagnosis notes and any service correspondence.
Never open the battery enclosure, handle orange high voltage cables or attempt a DIY high voltage repair. High voltage work belongs with trained technicians. Improper repairs can create safety risks and may affect coverage under the warranty terms.(Source: Tesla Support: Vehicle Warranty (opens in a new tab); Tesla Model Y Owner's Manual (2025+, North America) (opens in a new tab))

07

If you are buying used

Remaining original coverage follows the vehicle under Tesla's terms, so a used car can carry the balance of its battery warranty. Tesla's Certified Pre Owned program adds coverage when you buy a used vehicle from Tesla, but a car bought from a private seller does not gain that extra Tesla coverage. The used buying guide walks through the full checklist.(Source: Tesla Support: Vehicle Warranty (opens in a new tab))

Related FAQ answers

Short overview answers on the Tesla FAQ that this guide expands.

Compare notes with Austin owners

Questions like these come up at club meetups. Bring yours.

Sources

Sources checked October 15, 2026. This guide is written by the Tesla Owners Club of Austin, an independent enthusiast community not affiliated with Tesla, and has not been reviewed by a human expert. Worked examples use hypothetical figures. Official documents, your vehicle's warranty and your county tax office are authoritative.

  1. Tesla Support: Vehicle Warranty(opens in a new tab)

    Current general warranty terms, battery retention threshold and Certified Pre Owned coverage summary.

  2. Tesla New Vehicle Limited Warranty (U.S., PDF)(opens in a new tab)

    Full warranty text linked from Tesla's warranty support page. The warranty for your exact VIN controls.

  3. Tesla Support: Range(opens in a new tab)

    General range factors and guidance. It is not a battery degradation diagnostic.

  4. Tesla Model Y Owner's Manual (2025+, North America)(opens in a new tab)

    Reference edition only. Other models, years and software versions differ; use the manual for your vehicle.