Are electric cars reliable?
Generally, electric cars require little maintenance and are remarkably reliable. Unlike internal combustion engines, an electric car’s powertrain houses only about a dozen moving parts, making breakdowns less likely than traditional gasoline or diesel engines with their thousands of moving components.
However, EVs are not immune to issues. They still utilize air conditioning systems, power seats, and sunroofs that can fail over time. While rare, failures in battery management systems or electronic control modules can be expensive. Typical out-of-warranty repair costs include:
Tesla Model S: MCU ($2,500), Onboard charger ($2,400), Electronic Control Module ($1,000).
Ford Mustang Mach-E: DC-to-DC Converter ($2,000), Infotainment & Computer ($1,500).
Rivian R1T: Charge Port ($2,000), Air suspension ($1,800), HVAC Mgmt System ($1,700).
Manufacturer, Dealer, and Extended Warranties
Manufacturer Warranties: Standard on all new vehicles, providing quality assurance directly from the factory.
Dealer Warranties: Coverage provided by a retailer to complement factory terms, often found on certified pre-owned (CPO) inventory.
Extended Warranties: Discretionary protection plans purchased to maintain coverage after factory terms expire.
What is a Basic Vehicle Warranty?
Often called a bumper-to-bumper warranty, this covers almost every component onboard, from window switches to touchscreens. It excludes wear-and-tear items like tires, windshield wipers, and brake pads.
Common Basic Warranty Periods:
3 Years / 36,000 Miles: Honda, Toyota, Chevrolet, and Ford.
4 Years / 50,000 Miles: Tesla, BMW, Polestar, Cadillac, Volkswagen, and Audi.
5 Years / 60,000 Miles: Kia, Hyundai, Rivian, and Jaguar.
EV Powertrain and Battery Warranties
An EV’s powertrain warranty typically covers the battery, electric motors, and propulsion hardware. These terms almost always exceed the basic vehicle warranty and, in many cases, exceed the federal mandate to provide additional peace of mind.
Common Powertrain & Battery Terms:
Tesla Model 3/Y RWD: 8 years / 100,000 miles.
Tesla Model 3/Y AWD: 8 years / 120,000 miles.
Tesla Model S & X: 8 years / 150,000 miles.
Rivian R1T & R1S: 8 years / up to 175,000 miles.
Hyundai & Kia (EV System): 10 years / 100,000 miles.
Specifics for Hyundai and Kia Owners
While the internal combustion powertrain warranty for these brands typically drops to 5 years/60,000 miles for second owners, the EV System Warranty is different. This specialized powertrain coverage—which protects the battery pack, electric motors, and onboard charger—is fully transferable to subsequent owners for the full 10-year or 100,000-mile term.
The Federal Battery Mandate
In the U.S., all new electric cars are federally mandated to have at least an 8-year or 100,000-mile battery warranty. This warranty is transferable and protects against defects and significant capacity loss—typically defined as the battery dropping below 70% state of health. Several automakers offer warranties extending the mandate, like Kia, Hyundai, Tesla, Rivian, and others.