Should you buy a used electric vehicle? What to check before you do.

The EV used car opportunity

EV values have depreciated faster than most buyers expected — partially due to rapid technology improvement and partially due to new federal and provincial rebates. A 2020 Nissan LEAF that listed for $42,000 new may be available for $22,000–$26,000 used. That's real money.

The central risk: battery degradation

Unlike a gas engine that wears gradually and is usually rebuildable, EV battery packs degrade over time and charge cycles. Capacity loss is permanent, and replacement packs are expensive ($8,000–$20,000 depending on the vehicle and pack size).

How to evaluate battery health

Check the state of health (SOH) indicator

Many EVs show SOH as a percentage in the instrument cluster or through a diagnostic app. The LEAF shows battery capacity bars (12 full bars = 100%, down to the 9-bar "Low Capacity" warning). A 2019 LEAF with 80,000 km and 10 bars is in acceptable shape.

Use a diagnostic tool

For Nissan LEAF, a $25 OBD2 adapter and the free Leaf Spy app (iOS/Android) reads exact battery state of health, cell balance, and temperature history. 85%+ SOH is the threshold most buyers use for confidence.

Request a dealer battery check

Nissan dealerships can run a battery diagnostic through their factory tools. Ask for a printout before buying any used LEAF or ARIYA.

Warning signs

• Below 75% SOH on a 2019 LEAF with under 80,000 km (unusual — could indicate charging abuse)
• Visible corrosion on charge port
• Charging that consistently stops before 80% without a scheduled limit set
• No charging history documentation

Warranty

The LEAF battery warranty is 8 years / 160,000 km for capacity (to 9 bars out of 12, or 75% capacity). If you buy a 2018–2024 LEAF with battery degradation below this threshold before warranty expiry, Nissan replaces it. Verify the in-service date before buying.

The math on a 2021 LEAF SV Plus

• Original MSRP: ~$46,000
• Typical used price (40,000 km): ~$26,000–$30,000
• Remaining federal iZEV rebate on used: up to $5,000 (if qualifying)
• BC CleanBC Used EV Rebate: up to $1,500 (income-tested, confirm current availability)
• Effective purchase price: potentially $19,500–$23,500

At that price, with 85%+ SOH and factory battery warranty remaining, this is genuinely excellent value.