Second Hand Electric Cars: What to Check Before Buying

Summary

• Battery health is the single most important thing to check when buying a used electric car — a degraded battery dramatically affects range, performance, and resale value.
• Most EV batteries come with an 8-year or 100,000-mile warranty from the manufacturer, so check the remaining warranty before committing to a purchase.
• Beyond the battery, inspect the charging ports, check the service history, verify the range on a test drive, and always run a vehicle history check.

Second-hand electric cars are becoming excellent value. Prices have fallen as more new models hit the market. But buying a used EV is different from buying a used petrol car. The battery is king. Here is what to check before handing over your money.

Battery Health: The Most Important Check

The battery is the most expensive component in an electric car. A replacement can cost £5,000–£15,000 depending on the model. Checking its condition is essential.

How to check battery health:

• State of Health (SoH): This percentage shows how much capacity the battery retains compared to when it was new. Above 85% is good. Below 75% is a concern.
• Dashboard display: Some EVs show SoH in the settings or diagnostic menu (e.g. Nissan Leaf shows bars on the dashboard).
• Diagnostic scan: Ask the dealer or seller for a battery health report. Independent EV specialists can also perform this check.
• Range check: Charge to 100% and check the estimated range. Compare this to the original WLTP range to gauge degradation.

A battery at 90% SoH still provides 90% of its original range. At 80%, you lose a fifth of the range. This may or may not be acceptable depending on your daily needs.

Batteries degrade naturally over time and use. Losing 2–3% per year is normal. A five-year-old EV at 85–88% health is performing well.

---

Battery Warranty

Most EV manufacturers offer battery warranties of 8 years or 100,000 miles. Some specifics:

Manufacturer	Battery Warranty	Guaranteed Capacity
Tesla	8 years / 120,000 miles	70%
Nissan	8 years / 100,000 miles	75% (9 bars)
Hyundai / Kia	8 years / 100,000 miles	70%
Volkswagen	8 years / 100,000 miles	70%
BMW	8 years / 100,000 miles	70%

Check when the warranty started (usually the first registration date) and how many miles the car has done. A three-year-old EV with 30,000 miles still has five years and 70,000 miles of battery warranty remaining.

If the battery drops below the guaranteed capacity within the warranty period, the manufacturer must repair or replace it at no cost.

---

Charging Port And Cable Check

Inspect the charging equipment carefully:

• Charging port condition: Check for damage, corrosion, or loose fittings on both the AC and DC (rapid) charge ports.
• Charge port cover: Make sure the flap or cover opens and closes properly.
• Included cables: Check that the charging cables are included. A replacement Type 2 cable costs £100–£300.
• Test both charging types: Plug in to both a slow charger and a rapid charger to confirm both ports work.

Charging port issues can be expensive to repair. A faulty onboard charger can cost £1,000 or more to replace.

---

Service History

EVs need less servicing than petrol cars, but they still need some maintenance. Check for:

• Regular service stamps from a main dealer or approved EV specialist.
• Brake fluid changes (typically every two years).
• Cabin filter replacements.
• Tyre replacement records (EVs wear tyres faster due to extra weight and instant torque).
• Any software updates that have been applied.

A complete service history adds value and shows the car has been cared for. Gaps in the history are a red flag.

---

Test Drive Essentials

A test drive in a used EV should focus on specific areas:

1. Check the estimated range. With a full or near-full charge, does the range estimate match what you would expect for the battery size?
2. Test regenerative braking. It should feel smooth and consistent. Jerky regeneration can indicate issues.
3. Listen for unusual noises. EVs are quiet, so any whining, clunking, or buzzing is easier to hear and could indicate a problem.
4. Check the suspension. EVs are heavy, and worn suspension components affect handling and comfort.
5. Test all features. Climate control, heated seats, infotainment, and driver aids should all work properly.

Pay particular attention to tyre condition. EV tyres wear faster than those on petrol cars. A full set of replacement tyres can cost £400–£800.

---

Run A Vehicle History Check

Just like any used car, you must check the vehicle's history before buying. A car history check confirms:

• Whether the car has outstanding finance.
• Whether it has been written off or stolen.
• The mileage history for clocking detection.
• The number of previous owners.
• V5C registration document accuracy.

This is essential. EVs can carry hidden finance just like any other car. Protect yourself before committing.

---

Popular Used EVs And What To Watch For

• Nissan Leaf: Check battery bars (12 = 100%). Early models (2011–2017) have air-cooled batteries that degrade faster in hot conditions.
• Tesla Model 3: Check panel gaps and paint quality. Verify Supercharger access is included.
• Renault Zoe: Some early models had battery lease agreements — make sure you are buying the battery, not just the car.
• Volkswagen ID.3: Check for software glitches. Early models had infotainment issues that have since been fixed by updates.
• Hyundai Kona Electric: Excellent reliability record. Check for the battery recall that affected some 2018–2020 models.

A used EV can be a fantastic purchase if you do your homework. Check the battery, verify the warranty, inspect the charging system, and always run a history check. For more on EV costs, see our electric car running costs guide.

Read our other articles: