i4 battery degradation and used range
EV batteries lose capacity slowly. At the average rate measured across 22,700 EVs (2.3% a year), a 2022 i4 rated for 484 km would have roughly 441 km of range today.
i4 used range by model year
| Model year | Rated when new | Age (years) | At 1.5%/yr | At 2.3%/yr | At 3.0%/yr |
|---|---|---|---|---|---|
| 2022 | 484 km | 4 | 456 km | 441 km | 428 km |
| 2023 | 484 km | 3 | 463 km | 451 km | 442 km |
| 2024 | 494 km | 2 | 479 km | 472 km | 465 km |
| 2025 | 512 km | 1 | 504 km | 500 km | 497 km |
| 2026 | 536 km | 0 | 536 km | 536 km | 536 km |
The three columns reflect how the car was charged. Telematics firm Geotab found about 1.5% a year for EVs that rarely use DC fast chargers, 2.3% on average, and around 3% for EVs that fast-charge heavily at high power. Rated range is the longest version for each model year.
Checking a used i4
Ask the seller for a battery health or state-of-health report from a dealer or a battery-testing service, and check whether the original battery warranty still applies. A full charge that shows a much lower range estimate than this table, in mild weather, is worth questioning.
Rated range: Natural Resources Canada Fuel Consumption Ratings, battery-electric vehicles 2012-2026 (updated March 9, 2026), 2026 model year unless noted. Estimates explained in how we estimate.