Battery degradation has long been one of the reasons new car buyers have held out on purchasing an EV. However, data from a new study reveal that the top-performing EVs lose less than 5 percent of their range after 93,205 miles (150,000 km) of driving, meaning battery packs will easily last the average life of most new cars.

The study, published by Aviloo, has been labeled the largest independent study of used EV batteries ever conducted. More than 500,000 battery tests have been published, and the results show how 20 of the industry’s most popular EVs perform.

Read: A Seven-Year-Old Tesla Model 3 Survived 380,000 Miles, Its Range Did Not

The Hyundai Ioniq 5 performed best after 31,068 miles (50,000 km) of testing, retaining 97.1 percent of its original usable capacity. Other strong performers after 31,068 miles included the Mercedes-Benz CLA at 96.6 percent, the Hyundai Kona EV at 96.3 percent, the Audi Q8 e-tron with 95.7 percent, the BMW i4 with 95.6 percent, and both the Volvo XC40 Recharge and VW ID.4 at 95.2 percent battery retention.

After 93,205 miles of driving, the Mercedes-Benz CLA came out on top with a battery health of 94 percent. This placed it ahead of the Hyundai Ioniq 5 (93.6 percent), Hyundai Kona EV (93 percent), Volvo XC40 Recharge (92.8 percent), Ford Mustang Mach-E (92.5 percent), and the Polestar 2, also at 92.5 percent.

Teslas Disappoint

Several popular EVs did not perform as well as the competition. Most notable was the Tesla Model Y, which retained just 90.3 percent of its battery capacity after 93,205 miles, and the Tesla Model 3, which retained 88.9 percent of its battery capacity. Other poor performers included the Renault Zoe (87.3 percent), Mini Cooper SE (87.1 percent), and Nissan Leaf (86.7 percent), all of which have relatively small batteries.

Importantly, the results of this study don’t mean every Mercedes-Benz CLA will have 94 percent battery health after 93,205 miles, or every Peugeot e-208 will have 90.7 percent battery health. The study examined the median across all vehicles and found that good and bad examples of the same car can have battery health ratings that vary by as much as 13.5 percent. Nevertheless, the study demonstrates just how good current EV batteries are.

Earlier this month, Mercedes-AMG set a class lap record for the new electric CLA 45 at the Nürburgring, lapping the circuit in an impressive 7:32.070. With three electric motors and a combined 671 hp and 1,297 lb-ft (1,759 Nm), it’s quite a different proposition than the old one. Mercedes insists it’s still fun, despite the electric shift.

Much like we saw with the all-electric AMG GT 4-Door earlier this year, Mercedes-AMG has tried to capture the essence of its combustion cars in the electric CLA 45. It’s done this by simulating gear shifts and using a soundtrack to simulate the old 2.0-liter turbocharged four-cylinder. As recently revealed by Mercedes boss Ola Kallenius, the system can also replicate the sound of a V8.

“When I first drove the CLA 45 with that system, I was like a born-again Christian,” Ola Kallenius told Autocar during a recent interview. “It was the best V8 I’d ever driven: it had all the feeling of a V8 but with more power and torque.”

Read: 2027 Mercedes-AMG CLA 45 EV Debuts With 3 Motors, 671 HP And A Vibrator

Mercedes-AMG made no mention of the CLA 45 reproducing V8 sounds when it unveiled the new car, only noting that it replicated a boosted four-cylinder. Of all the EVs we’ve driven that aim to replicate the sound of a fire-breathing combustion engine, the Hyundai Ioniq 6 N has done the best job, so it’ll be interesting to see how good Mercedes-AMG’s system is.

The Seats Vibrate, Too

One particularly interesting feature launched with the CLA 45 is the new AMGForce shakers. These have been incorporated into the front seats and are designed to deliver vibrations that mimic those of a combustion car. We’re a little doubtful, however, that, no matter how well Mercedes-AMG may have worked on these systems, it cannot possibly have been “the best V8” Kallenius has ever driven.

In the performance stakes, the new electric CLA 45 has all the makings to be thrilling to drive. The automaker says it’ll hit 62 mph (100 km/h) in 3.0 seconds and won’t stop accelerating until 168 mph (270 km/h) with the AMG Dynamic Plus Package. Thanks to the 94 kWh battery, it also has an impressive WLTP driving range of 416 miles (670 km).

Sources: Autocar