As a result of these findings, CR is changing the predicted reliability for several cars. While CR has not yet tested the Ford Mustang Mach-E and the Mercedes-Benz EQC, their reliability predictions are now below average. The Taycan, Porsche’s first-ever EV, impressed us on our test track, and it’s loaded with new equipment and tech. While we don’t have sufficient data from our members on the Taycan, because the new data showing problems with other EVs (this is Porsche’s first EV) we downgraded our reliability prediction for the vehicle from average to below average, and the Taycan is no longer recommended.
In response, Porsche told CR that the “focus in the development of every Porsche vehicle is careful engineering” with the “Taycan being no exception,” and underscored the company’s reliability by pointing to “the over 70 percent of all Porsche vehicles made that are still on the road today.” Porsche also cited its positive ranking in CR’s brand report card, which shows it is the most reliable European brand.
Not every EV has had issues in CR’s ratings. Basic EVs with their electric motor and battery have fewer parts that can have reliability problems. The Bolt, a compact EV, is one of Chevrolet’s most reliable models, but it doesn’t have many bells and whistles. Same with the Nissan Leaf, which has had mostly average reliability ratings over its long-for-an-EV model run. Conversely, feature-laden models, such as Tesla’s Model S and Model X vehicles, have had more ongoing problems.
Reliability issues usually get ironed out when models are on the market for a few years. A good example is the Ford Edge, which was last redesigned for the 2015 model year. Ford comes in 22nd in CR’s list of 26 automakers, but the Edge stands out as its most reliable model, in contrast to the poor reliability of the redesigned 2020 Explorer and Escape SUVs.
Increasingly, EVs have become more than electrified versions of the same or similar gasoline-powered models. But Jake Fisher, senior director of CR’s Auto Test Center, says the latest EVs are more frequently built on unique platforms, designed to optimize battery placement and interior room. “Whenever a new platform or new component is introduced, there’s an opportunity for problems,” he says. “There are plenty of new cars that have reliability problems because they’re using a new transmission, infotainment system, or other unproven component. In most cases, it takes a little time to get everything straightened out, as anyone who has ever bought the first version of a car knows.”
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Reliability Problems Plague Newer Electric Cars - ConsumerReports.org
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