Bumper-to-Bumper vs Powertrain Warranty: Coverage by Brand

A bumper-to-bumper warranty pays for factory defects in almost every part of a new car, usually for 3 years or 36,000 miles, or longer at some brands. A powertrain warranty covers only the engine, transmission and parts that drive the wheels, and usually runs longer, typically 5 years or 60,000 miles and up to 10 years or 100,000 miles at Hyundai, Kia, Genesis and Mitsubishi.

Both start on the day the car is first sold, and both end at whichever limit, years or miles, you reach first. Neither pays for maintenance, wear items or damage.

What does a bumper-to-bumper warranty cover?

A bumper-to-bumper warranty, often called the basic or new vehicle limited warranty, covers repairs needed because of defects in materials or workmanship. That includes electronics, infotainment, power windows and locks, climate control, sensors, suspension and steering parts.

It does not cover parts that wear out with normal use, such as brake pads, wiper blades, filters and clutch linings, or routine maintenance like oil changes and alignments. Tires are usually warranted by the tire maker, not the automaker. Damage from crashes, flooding, misuse or lack of maintenance is excluded too.

What does a powertrain warranty cover?

A powertrain warranty covers the parts that make the car move: the engine block and its internal parts, the transmission or transaxle, the transfer case on all-wheel-drive and four-wheel-drive models, the drive shafts and the axles. Seals and gaskets for those parts are usually included.

Some brands add other items. Toyota, for example, lists seatbelts and airbags under its powertrain coverage. The exact list is in the warranty booklet for your model year, so read it before you assume a part is covered.

Once the bumper-to-bumper term ends, the powertrain warranty keeps going alone. A failed touchscreen in year four at a 3-year brand is your cost, while a failed transmission in year four is still covered at most brands.

How do warranty terms compare by brand?

Terms below are for new 2026 models sold in the US, from automaker warranty pages and booklets as reported as of 2026. Coverage can differ by model, and hybrid and EV parts carry their own terms.

Many other mainstream brands use terms close to Toyota’s 3 years / 36,000 miles basic and 5 years / 60,000 miles powertrain coverage. Confirm the terms in the booklet for the exact model year you are buying, since automakers do change them. For example, Toyota’s own warranty page lists each coverage separately, and Kia publishes its terms at kia.com/us/warranty.

Does the warranty transfer when I sell the car?

Bumper-to-bumper coverage transfers to later owners at most brands, for whatever time and mileage is left. The long powertrain terms are the main exception. Hyundai, Kia, Genesis and Mitsubishi limit the 10-year / 100,000-mile powertrain coverage to the original owner, and later owners get 5 years / 60,000 miles from the original sale date.

When you buy used, ask for the original in-service date. The clock started then, not on the day you buy.

What other factory warranties come with a new car?

New cars carry several more warranties alongside the two main ones. A corrosion warranty covers rust-through of body panels, often for 5 years or more with unlimited miles. Federal emissions warranties cover emissions parts, with certain major components such as the catalytic converter and engine computer covered for 8 years or 80,000 miles.

Hybrids and EVs add separate coverage for the battery and electric drive parts. Toyota, for example, covers hybrid batteries for 10 years or 150,000 miles from first use. Our guide to EV and hybrid battery warranties compares those terms by brand.

Can a dealer deny a warranty claim?

A dealer can deny a claim when the failure is not a factory defect, such as wear, crash damage or a problem caused by a modification. A dealer cannot void your whole warranty just because you used aftermarket parts or an independent shop. Under the federal Magnuson-Moss Warranty Act, the company generally has to show that the part or the work caused the failure.

Keep receipts for oil changes and other scheduled maintenance, because a missing service record is the most common reason a powertrain claim gets questioned. Our explainer on what voids a car warranty covers the rules in detail.

Bottom line

The bumper-to-bumper warranty is the one you use most in the early years, because electronics and trim fail more often than engines. The powertrain warranty matters most later, when a major failure would cost thousands. Compare both when you shop, and read the booklet before buying an extended plan to fill a gap that may not exist.

FAQ

Is bumper-to-bumper coverage the same as a full warranty?

No. It covers defects in most parts, but excludes wear items, maintenance, tires and damage. Read the exclusions page in the booklet to see the full list.

Does a powertrain warranty cover the turbocharger?

Many brands include the turbocharger as part of the engine, but not all. Check the covered-parts list in your warranty booklet.

Do I have to service my car at the dealer to keep the warranty?

No. You can use any shop or do the work yourself, as long as you follow the maintenance schedule and keep records. The warranty can still be denied for a failure that poor maintenance caused.

Should I buy an extended warranty when the factory one ends?

It depends on the car’s repair record and how long you plan to keep it. Our guide to whether an extended warranty is worth it explains service contracts, refunds and common scams.