(Notice : Many questions whether this list is accurate. Bad BMS (Battery Management System)
can give wrong information)
🔋 KVD Battery Test (Sweden)
🧭 How the test works
KVD performs a standardized battery health check on all electric vehicles (EVs) and plug-in hybrids (PHEVs) sold through its platform. The goal is to provide transparency and buyer confidence in the second-hand EV market.
🧩 Process
- Diagnostic Readout (OBD2 Port)
- The technician connects a diagnostic tool to the car’s OBD2 port to extract data.
- Parameters analyzed include:
- SOH (State of Health): Remaining capacity vs. new battery (usually 85–100 % = very good).
- SOC (State of Charge): Current charge level.
- Charge Cycles: Number of full charging cycles (if available).
- Temperature and Cell Balance: Detects uneven performance or damaged cells.
- Data Evaluation and Classification
Results are displayed using a three-star system:- ⭐⭐⭐ = > 90 % of original capacity → Excellent condition
- ⭐⭐ = 75–90 % → Normal wear
- ⭐ = < 75 % → Reduced range / degraded capacity
- ! = Abnormal readings
- ? = Unavailable data
- Result Publication
The battery rating is shown directly in the car’s listing on kvd.se.
⚠️ What the test does not show
- It does not guarantee remaining lifetime or predict future degradation.
- It cannot detect localized cell damage that does not yet affect overall SOH.
- It does not assess physical damage to the battery casing.
Here is KVD’s latest list of cars with the best battery health (based on 1,366 tested used electric and plug-in hybrid cars; published October 28, 2025):
🔝 Brands – Highest Average SoH (State of Health)
1. Kia
2. Audi
3. Opel
4. Tesla
5. Mercedes
6. Peugeot
7. Volvo
8. BMW
9. Volkswagen
10. Škoda (kvd.se)
🔋 Electric Cars – Top Models
1. Kia EV6
2. Kia e-Niro
3. Tesla Model Y
4. Opel Mokka-e
5. Mazda MX-30
6. Audi Q4 e-tron
7. Fiat 500e
6. Volvo XC40 Recharge
7. Citroën ë-C4
8. Volkswagen ID.4 (kvd.se)
🔌 Plug-in Hybrids – Top Models
1. Kia Sportage
2. Kia Optima
3. Volvo XC60
4. Kia Ceed
5. Volvo V60
6. Peugeot 3008
7. BMW 530e
8. Volkswagen Passat GTE
9. BMW X1
10. BMW 330e (kvd.se)
The source summarizes KVD’s battery test (three-star system) and the results from their platform. (kvd.se)
Would you like me to create an Excel file with these lists + fields for price, WLTP range, SoH, and an automatic “value index”?
📋 Used EV & PHEV Inspection Checklist (Sweden 2025)
🧾 A. Documentation
| Checkpoint | What to Ask | Comment |
|---|---|---|
| Service Record | Is the car serviced regularly at an authorized workshop? | Important for cooling and warranty validity |
| Battery Warranty | Usually 8 years / 160 000 km – still valid? | Often applies if SOH > 70 % |
| Inspection Reports | Ask for the last 2 inspection protocols | Look for electrical faults or rust |
| Charging History | Mostly home (AC) or fast (DC) charging? | Frequent DC charging accelerates wear |
| KVD Battery Test | Ask for the SOH or star rating | ⭐⭐⭐ = excellent ⭐ = reduced |
⚙️ B. Technical Condition
| Component | What to Check | Risk Indicator |
|---|---|---|
| Battery Health (SOH) | > 90 % = excellent, 80–90 % = normal | < 80 % = reduced range |
| Cooling System | Clean coolant, no leaks | Failure = faster degradation |
| Charging Port & Cable | No corrosion or burnt marks | Heat damage risk |
| Charging Time (AC/DC) | Compare to manufacturer spec | Slow = possible degradation |
| Regeneration Braking | Noticeable deceleration when lifting throttle | None = potential fault |
| Drivetrain (motor/inverter) | Smooth and quiet | Whining or vibration = mechanical/electrical issue |
⚡ C. Test Drive
| Step | What to Observe | Note |
|---|---|---|
| Acceleration | Smooth and linear | Jerking = voltage drop |
| Estimated Range | Should align with SOH & WLTP figures | > 10 % deviation = possible degradation |
| Noise Level | Quiet cabin, no high-frequency whine | Constant hum = OK |
| Charging Behaviour | AC (11 kW) and DC (100–200 kW) should both work | Fault = charger or battery issue |
🧰 D. Additional Checks
| Checkpoint | Recommended Value |
|---|---|
| Tire Pressure | 2.6–2.8 bar typical for EVs |
| Tire Wear | Even front/rear wear = proper alignment |
| Brakes | EVs often get surface rust – check discs |
| Undercarriage | No dents or hits on battery pack |
| Software / Firmware | Should be up to date for optimal charging and range |
🧮 E. Value Index (Range per Price Unit)
Use this to compare vehicles by combining range, battery health, and price:
🧾 Summary
- KVD’s battery test provides a transparent first impression of EV condition.
- Always complement it with cooling, charging, and warranty checks.
- Compare SOH, WLTP range, and price using the Value Index formula.
- For best results, perform a real-world charging test (AC/DC) and short drive with regeneration check.
Would you like me to now build the Excel template version — fully in English — with:
✅ automatic color-coding (green = good / yellow = normal / red = risk)
✅ a formula for the Value Index
✅ dropdown fields for the KVD star rating (⭐ to ⭐⭐⭐)?