Diesel vs Petrol Generator Cost Calculator
Compare the long-term running costs of diesel versus petrol generators.
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Formula
How it works: Calculates specific fuel costs for both fuel types to help you decide which generator is more economical for your usage.
Worked Example
Diesel vs Petrol Economics
The "right" choice depends on how many hours you intend to run the unit.
- Diesel wins for high-hour industrial or backup use.
- Petrol generators are often lighter and quieter for recreational use.
- Initial purchase price for diesel is usually higher.
Calculate your expected usage hours before making a purchase.
You can also calculate changes using our Generator Running Cost Calculator or Diesel Consumption Calculator.
Frequently Asked Questions
Which fuel is more energy dense?
Diesel has more energy per litre, making diesel engines generally more fuel-efficient.
What about maintenance?
Diesel engines are often more complex and can be more expensive to repair, but tend to last longer.
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