Calculate monthly and yearly diesel expenses for your car or SUV based on daily distance, mileage, and current diesel rates.
Diesel fuel possesses a higher energy density (~35.5 MJ/L) compared to petrol (~32 MJ/L). Compression-ignition diesel engines operate at much higher compression ratios (15:1 to 20:1), resulting in 15% to 25% better fuel efficiency under heavy loads and highway speeds.
Example: Driving 50 km daily for 24 days a month with a diesel SUV yielding 18 km/L at a diesel rate of ₹89.50 per litre:
Modern BS6 diesel engines in India use Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR) with AdBlue (DEF). If driven exclusively in low-speed city traffic, DPF filters require periodic high-speed highway regeneration drives to burn off soot accumulation.
If your monthly driving is under 1,000 km, petrol or CNG is generally more economical due to lower upfront vehicle purchase prices and simpler maintenance requirements.
BS6 diesel vehicles consume approximately 1 litre of AdBlue for every 800-1,000 km driven, adding about ₹0.08 to ₹0.12 per km to running costs.