How long an LPG conversion takes to pay back
Enter the conversion cost, your yearly distance, and what you use and pay on petrol and on LPG.
LPG holds less energy per liter than petrol, so a converted car usually burns more liters of it. That is why you enter both consumption figures instead of comparing pump prices alone.
The result counts fuel only. A conversion can also bring extra servicing, inspections and warranty questions, so add those costs to the conversion figure if they apply to your car.
Fuel cost only, in whatever currency you enter. Rules on conversions differ by country.
Estimates for general information only, not professional or legal advice. Check your owner's manual, a qualified mechanic and current official rules before relying on a result.
Example
A 900 conversion on a car doing 15,000 km a year, using 7.5 L/100 km of petrol at 1.60 or 9 L/100 km of LPG at 0.75, saves 787.50 a year. It pays back in about 13.7 months, or 17,143 km.
Questions
Is an LPG conversion worth it?ShowHide
It usually depends on how far you drive and the gap between petrol and LPG prices. The more kilometers you cover each year, the sooner it pays back.
What LPG consumption should I enter?ShowHide
Use a measured figure if you can. If you only have a petrol figure, ask the installer for a realistic estimate for your engine.
Are my numbers saved?ShowHide
No. Nothing is stored when you leave this page.