EV vs Petrol: which is cheaper for you?
Running cost comparison on your real numbers · excludes servicing & maintenance
Your effective price after card discounts.
Home ~0.30 · public AC ~0.69 · DC ~0.80.
From the depreciation calculator.
Fill both to compare true total cost of ownership.
| EV energy cost per km | — |
| Petrol fuel cost per km | — |
| Annual saving at this mileage | — |
| Breakeven mileage (EV starts saving) | — |
Comparison covers energy cost and road tax only — it excludes servicing, maintenance, insurance, depreciation and COE differences. Drag the mileage slider to see how the gap moves with your driving.
Run your exact numbers with me — including the purchase price, COE and trade-in side that this calculator doesn't cover.
Why doesn't this include servicing and maintenance?
Servicing costs vary hugely by model, workshop and package — bundling a guess into the math would make the comparison less honest, not more. EVs generally cost less to service (no oil, fewer moving parts, regen braking reduces brake wear), so if the calculator already shows the EV cheaper on energy alone, maintenance typically widens the gap.
Which charging price should I use?
Use the rate you'd realistically charge at most of the time. Home charging (~S$0.30/kWh) if you have a landed property or condo charger; the public AC median (~S$0.69/kWh) if you rely on HDB or mall chargers; DC fast (~S$0.80/kWh) only if you're a heavy fast-charge user.
Where do I find my road tax figures?
Use the Enquire Road Tax shortcut above for your current vehicle, or check OneMotoring's tax structure pages when comparing a car you're considering. Note EVs pay an Additional Flat Component on top of the power-based road tax.