A new analysis of nearly 10,000 real-world EV battery tests found that the same Tesla Model 3 holds up very differently depending on which battery it was built with — and the cheaper LFP version comes out on top.
The Model 3 with CATL’s lithium iron phosphate (LFP) pack averaged 93.3% battery health among cars that had driven more than 62,000 miles, beating every nickel-based version of the car in the dataset.
The same Model 3, four different results
The data comes from Carla, a Swedish used-EV retailer that analyzed 9,954 battery tests conducted in Sweden between 2022 and 2026 using AVILOO’s battery diagnostics, which measure a pack’s actual state of health rather than the car’s dashboard estimate.
When Carla broke the Tesla Model 3 down by battery, the spread was striking:
