How we calculate
We show our maths.
Every figure on this website has an open calculation behind it. Here you can see how we arrive at €585/kWh, around 350 km of real-world range and a 5-year TCO — including all assumptions. If you don't share an assumption, you can adjust it yourself in our calculators.
585 €/kWh — what exactly that is
| Component (T6 conversion standard package) | Wert |
|---|---|
| MEB battery pack 82 kWh (gross, identical to ID.Buzz) | 29.500 € |
| E-drive module (inverter, motor) | 8.200 € |
| HV wiring, safety system | 2.400 € |
| Adapter structures (use original mounts) | 1.200 € |
| Software / VCU | 1.800 € |
| Workshop hours (engineering + build) | 4.890 € |
| Total ESDI Kit + Build | 47.990 € |
| Usable battery capacity | 82 kWh |
| From this: ESDI conversion price per kWh | 585 € |
Comparison value ID.Buzz Pro: List price 68,450 € minus residual value of the T6 (typically 8,000–12,000 €) = effective outlay 56,450–60,450 € for 77 kWh of usable capacity = ~733–785 €/kWh.
We communicate 847 €/kWh as a non-binding list price per kWh, because many buyers do not offset the T6 residual value, since they would keep the T6 anyway — so the more honest comparison figure is without the residual value deduction.
Real range – how we arrive at around 350 km
WLTP certification is a standardized procedure on a test bench at TÜV/DEKRA that costs 25,000–60,000 € per vehicle platform. We deliberately do not invest that money — but in transparent real-world value calculation.
Our range figures are based on:
Battery 82 kWh gross, 77 kWh net (after SOC reserve of ~5 %)
Real consumption around 21 kWh/100km (measured at the battery, mixed driving, one driver)
Adjustment for outside temperature (–10 °C reduces range by ~15%), load, topography
This results in: around 350 km of real range under typical conditions. In the range calculator, you can adjust load and outside temperature yourself and see the respective range.
| Bedingung | Consumption | Range (77 kWh net) |
|---|---|---|
| Light load, mixed profile, +20 °C | 21 kWh/100km | ~367 km |
| Medium load, city + country, +10 °C | 23,9 kWh/100km | ~322 km |
| Full load, trailer / mountainous terrain, +10 °C | 26,7 kWh/100km | ~288 km |
| Medium load, –10 °C | 27,5 kWh/100km | ~280 km |
5-year TCO — how the calculator computes it
Our TCO calculator compares three scenarios for a 5-year period:
1. Keep existing diesel fleet (status quo)
2. ESDI conversion to electric
3. New-purchase ID.Buzz fleet
Default assumptions per scenario — all adjustable in the calculator:
| Assumption | Default |
|---|---|
| Annual mileage | 25.000 km |
| Diesel consumption | 10 L/100km |
| Diesel price | 1,75 €/L |
| Electricity consumption | 21 kWh/100km |
| Electricity price (workshop wallbox) | 0,32 €/kWh |
| AdBlue cost diesel | €200/year |
| Maintenance diesel (oil, filter, EGR, turbo) | €1,800/year |
| Maintenance electric (tires, brakes, AC service) | €280/year |
| Residual value change diesel over 5 years | −40 % |
| Residual value change electric conversion over 5 years | −20 % |
| Insurance (comparable) | €1,200/year |
In the calculator you can adjust every assumption and immediately see how the TCO changes. The default values are calculated conservatively — we do not want you to rely on marketing optimism.
What we do not claim
No "WLTP-certified"
We do not measure on a test bench.
No "ROI in X months"
TCO advantages depend on electricity price fluctuations, diesel price and subsidy policy. We give you the mathematics — you make your forecast.
NO "GUARANTEED CHEAPER"
With very low mileage or high residual value risk, keeping a diesel can be cheaper. Our calculator shows this honestly.
How we build
Construction transparency: a maximum of two drill holes, original mounts, TÜV-compliant. Value retention through methodology.
EN 
DE