Gas vs Diesel Calculator
Compare the annual fuel costs of gasoline vs diesel vehicles side by side. Factor in MPG differences and fuel price premiums.
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Diesel engines are typically 20-35% more fuel-efficient than gasoline due to higher compression ratios and energy-dense fuel. However, diesel fuel usually costs $0.20-$0.60 more per gallon. The breakeven depends on your mileage — high-mileage drivers (20k+ miles/year) often save with diesel. Diesel vehicles also tend to last longer (200k-300k miles) but have higher upfront costs and potentially more expensive maintenance.