Fuel Cost Calculator | Trip Gas Mileage & Expense Splitter 2026 — Free Online Tool

Divide trip distance by your vehicle's MPG to get gallons needed, then multiply by the price per gallon. Example: 300 miles ÷ 30 MPG = 10 gallons × $3.20 = $32.00 in gas for the trip.

A 300 mile trip uses 10 gallons at 30 MPG, 12 gallons at 25 MPG, and 15 gallons at 20 MPG. At $3.20 per gallon that is $32, $38.40 and $48 respectively.

Divide the current gas price per gallon by your vehicle's MPG. At $3.20 per gallon and 32 MPG, your cost per mile is $0.10. The IRS 2026 standard mileage rate is a common reimbursement benchmark.

EVs usually cost 50–70% less per mile. A gas car at 30 MPG and $3.20 per gallon costs about $0.107 per mile, while an EV at 3.5 miles per kWh and $0.17 per kWh costs about $0.049 per mile.

Divide 235.215 by the MPG value. 30 MPG equals 7.84 L/100km, and 40 MPG equals 5.88 L/100km. To go the other way, divide 235.215 by the L/100km figure.

Yes. Running the air conditioner raises fuel use by roughly 8–15%, and up to 25% on short city trips. Heavy stop-and-go traffic adds another 20–30% over steady highway driving.

Divide the total trip fuel cost by the number of occupants. A $48 trip split between 4 people is $12 each, cutting per-person cost by 75% versus driving alone.

The IRS standard mileage rate reimburses business driving and covers fuel plus depreciation, insurance and maintenance. Multiply business miles by the rate to get your deductible amount.

Fill your tank completely and note the odometer (Mileage A). Drive until low, refill completely, note gallons added and new odometer (Mileage B). MPG = (Mileage B − Mileage A) ÷ Gallons filled. Example: drove 300 miles, filled 10 gallons = 30 MPG.

Divide 235.215 by the L/100km value. A car consuming 8.0 L/100km gets 235.215 ÷ 8 = 29.4 MPG. To convert km/L to MPG, multiply your km/L figure by 2.352.

Petrol prices in Pakistan (2026 estimates based on OGRA fortnightly notifications): Petrol (RON 92): Rs. 270-295/liter, Petrol (RON 95/Higher Octane): Rs. 280-305/liter, High Speed Diesel (HSD): Rs. 265-290/liter, Light Speed Diesel (LSD): Rs. 150-175/liter, Kerosene Oil: Rs. 165-185/liter, CNG: Rs. 120-145/kg, LPG (auto): Rs. 150-170/liter equivalent. Prices are revised every 15 days by the Ministry of Finance based on international crude oil prices, PKR/USD exchange rate, and PDL (Petroleum Development Levy up to Rs. 60/liter). Check OGRA.org.pk for current fortnightly prices.

Comparison in Pakistan (2026): 1) PETROL (RON 92): Rs. 270-295/L, ~14 km/L avg, easy availability, higher octane for performance, 2) DIESEL (HSD): Rs. 265-290/L, ~16 km/L avg (15-20% more efficient than petrol), better for long-distance and high-load vehicles, 3) CNG: Rs. 120-145/kg, ~22 km/kg avg (40% more efficient than petrol), cheapest per km, but limited availability (not all stations), shorter range due to tank size, 4) LPG: Rs. 150-170/L equivalent, used as auto fuel alternative, less common. CNG is cheapest per km by 40-50% but has availability issues. Diesel is best for high-mileage users. Petrol is best for city driving and convenience.

Average CO2 emissions per km by vehicle type: 1) Small petrol car (Alto, Cultus): 110-130g CO2/km, 2) Medium petrol sedan (Corolla, Civic): 140-170g CO2/km, 3) Large petrol SUV (Fortuner, Prado): 200-260g CO2/km, 4) Small diesel car: 100-130g CO2/km (lower than petrol), 5) Large diesel SUV: 180-220g CO2/km, 6) Hybrid (Prius): 80-100g CO2/km, 7) Electric vehicle: 0g direct (50-100g indirect from grid), 8) CNG vehicle: 130-160g CO2/km. Annual emissions: 15,000 km × 150g/km = 2,250 kg CO2/year per car. To offset, plant ~36 trees per year per car. Global average per capita: 4,700 kg CO2/year.

EV vs Petrol cost comparison (2026): 1) PETROL: Rs. 270/L × 14 km/L = Rs. 19.3/km in Pakistan, 2) ELECTRIC: Rs. 50/unit × 0.15 kWh/km = Rs. 7.5/km in Pakistan, 3) SAVINGS: ~60% per km with EV. Annual savings (15,000 km): Rs. 177,000/year in fuel alone. Plus EV benefits: 1) No oil changes, 2) Less brake wear (regenerative braking), 3) Lower maintenance (no transmission, exhaust), 4) Government incentives (reduced GST/registration in many countries), 5) Tax credits (up to $7,500 in US, £3,000 in UK). Payback period: 3-5 years for mid-range EVs. Total cost of ownership over 10 years: 40-60% less than petrol equivalent.

Top fuel efficiency tips: 1) Maintain proper tire pressure (saves up to 3% gas), 2) Avoid aggressive acceleration and braking (saves 15-30% fuel), 3) Use cruise control on highways, 4) Remove unnecessary trunk weight, and 5) Turn off AC when driving at low city speeds.

Fuel cost per km formula: Divide fuel price per liter by your vehicle's mileage (km per liter). For example, if petrol costs $1.50 per liter and your car gets 15 km/L, your fuel cost per km is $0.10/km ($1.50 ÷ 15).

Top 15 ways to improve fuel efficiency: 1) Maintain steady speed (use cruise control on highways), 2) Avoid aggressive acceleration and braking (can improve by 15-30%), 3) Keep tires properly inflated (under-inflation = 3% efficiency loss), 4) Regular maintenance (air filter, spark plugs, oil) — saves 4-10%, 5) Remove roof racks/boxes when not in use (5-25% drag reduction), 6) Close windows at high speed (reduces drag), 7) Use AC efficiently — set to 24-26°C, not max, 8) Reduce vehicle weight (remove unnecessary items, 100kg = 1-2% efficiency), 9) Plan routes to avoid traffic and hills, 10) Combine errands into one trip (cold engine = 12+ minutes to warm up), 11) Use recommended octane fuel (higher isn't always better), 12) Check wheel alignment (misalignment = 10% efficiency loss), 13) Replace oxygen sensor when old (up to 40% gain), 14) Use cruise control on highways (saves 7-14%), 15) Consider hybrid/EV upgrade for city driving.

Most fuel-efficient cars 2026 (by fuel type): 1) ELECTRIC: Lucid Air Pure (5.0 mi/kWh, 824 km range), Tesla Model 3 (4.5 mi/kWh), Hyundai Ioniq 6 (4.4 mi/kWh), 2) HYBRID: Toyota Prius Prime (54 MPG / 22.7 km/L), Hyundai Elantra Hybrid (54 MPG), Toyota Corolla Hybrid (52 MPG), 3) PETROL: Toyota Corolla 2.0L (35 MPG / 14.9 km/L), Honda Civic 1.5L Turbo (36 MPG), Mazda3 Skyactiv-X (38 MPG), 4) DIESEL: VW Golf BlueMotion (62 MPG / 26.4 km/L), Peugeot 308 BlueHDi (67 MPG), 5) CNG: Maruti Suzuki WagonR CNG (33 km/kg), Hyundai Aura CNG (28 km/kg). Real-world: Most efficient EV = 5 mi/kWh, best hybrid = 54 MPG, best petrol = 38 MPG.

Air conditioner impact on fuel: 1) Running AC increases fuel consumption by 10-25% depending on outside temperature, vehicle size, and AC setting, 2) In city driving, AC can use 2-3 HP, requiring more engine power, 3) At highway speeds (>80 km/h), AC is more efficient than open windows (open windows create 10-20% more drag), 4) At city speeds (<60 km/h), open windows is often more efficient than AC. Optimization: 1) Set AC to 24-26°C (not max cold), 2) Use recirculation mode (cools faster), 3) Pre-cool car before driving, 4) Park in shade, 5) Use sunshades, 6) Service AC annually (low refrigerant = more load), 7) In mild weather (<25°C), consider turning AC off. Hybrid/EV: AC uses battery power, can reduce range by 10-20%.

City vs Highway fuel efficiency: 1) City driving (20-40 km/h, frequent stops): 12-15 km/L average, 2) Highway driving (80-100 km/h, steady): 16-22 km/L average, 3) Combined (typical 50/50 mix): 14-18 km/L. Why the difference: 1) Stop-and-go traffic uses more fuel for acceleration, 2) Idling wastes fuel (0 km/L while stationary), 3) Lower gears at city speeds = higher RPM = more fuel, 4) Highway uses higher gears (better fuel economy), 5) Aerodynamic drag matters more at high speed (but engine efficiency is better). Hybrid vehicles excel in city (regenerative braking). EVs are most efficient in city (no idle waste). Real-world factors: traffic (city -20%), AC (city -10%), cold weather (-12% in winter), roof load (-5-25%).

Fuel cost per km calculation: Cost per km = (Fuel Price per Liter) ÷ (Vehicle Efficiency in km/L). Example 1: Petrol Rs. 270/L, car 14 km/L → 270/14 = Rs. 19.3/km. Example 2: Diesel Rs. 265/L, car 16 km/L → 265/16 = Rs. 16.6/km. Example 3: EV, electricity Rs. 50/kWh, consumption 0.15 kWh/km → 50 × 0.15 = Rs. 7.5/km. Comparison: Petrol ~Rs. 19/km, Diesel ~Rs. 17/km, CNG ~Rs. 6/km, EV ~Rs. 7.5/km. For total cost per km (TCO), add: maintenance (Rs. 2-5/km), depreciation (Rs. 5-10/km), insurance (Rs. 3-7/km), tires (Rs. 0.5-1/km) = total Rs. 30-40/km for petrol car. Use this for rideshare pricing, business mileage reimbursement, or total cost comparison.

Cheapest fuel per km in Pakistan (2026): 1) CNG: Rs. 6-8/km (cheapest by 50%+), 2) Petrol: Rs. 18-20/km, 3) Diesel: Rs. 16-18/km, 4) LPG: Rs. 12-15/km, 5) Hybrid: Rs. 12-15/km, 6) EV: Rs. 6-8/km (but high upfront cost). CNG availability issues: 1) Not available at all stations, 2) Long queues at CNG stations, 3) Reduced trunk space (CNG cylinder), 4) Performance drop (5-10%), 5) Engine wear (CNG burns hotter). Best strategy for car buyers: 1) City driving <50 km/day: CNG if available, 2) Long-distance: Diesel, 3) Mixed: Petrol or Hybrid, 4) Future-proof: EV (subsidies in Pakistan, charging infrastructure improving). For taxi/commercial: CNG best ROI despite inconvenience.

Recommended service intervals for fuel efficiency: 1) Oil change: every 5,000-10,000 km (synthetic) or 3,000-5,000 km (conventional) — old oil = 1-2% efficiency loss, 2) Air filter: every 15,000-20,000 km (or annually) — clogged filter = 10% efficiency loss, 3) Spark plugs: every 30,000-100,000 km (depending on type: copper 30k, platinum 60k, iridium 100k) — worn plugs = 30% efficiency loss, 4) Fuel filter: every 30,000-50,000 km, 5) Tire rotation: every 10,000 km (uneven wear = 5% loss), 6) Wheel alignment: every 20,000 km or when hitting potholes (misalignment = 10% loss), 7) Coolant flush: every 50,000-100,000 km, 8) Transmission fluid: every 60,000-100,000 km, 9) Oxygen sensor: every 100,000 km (faulty = 40% loss). Annual service minimum. Total annual savings from proper maintenance: 5-15% fuel efficiency = Rs. 15,000-40,000/year.

Average monthly fuel cost varies by usage: 1) LOW USAGE (1,000 km/month, 14 km/L petrol car, Rs. 270/L): 1,000/14 × 270 = Rs. 19,286/month, 2) AVERAGE USAGE (1,500 km/month): Rs. 28,929/month, 3) HIGH USAGE (2,500 km/month, daily commute + weekend): Rs. 48,214/month, 4) VERY HIGH (5,000 km/month, traveling salesman): Rs. 96,429/month. By country (15,000 km/year, mid-size car): Pakistan: Rs. 280,000-320,000/year, India: Rs. 110,000-130,000/year, USA: $1,400-1,800/year (Rs. 392,000-504,000), UK: £1,500-1,900/year (Rs. 540,000-684,000), UAE: AED 4,500-6,000/year (Rs. 340,000-454,000), Saudi: SAR 3,000-4,500/year (Rs. 222,000-333,000), Germany: €1,400-1,800/year (Rs. 420,000-540,000). Add maintenance (10-15%), insurance, registration = total car ownership cost 2-3x fuel cost.

Top 20 ways to save on fuel: 1) Drive smoothly (no rapid acceleration/braking, can save 15-30%), 2) Maintain speed (60-80 km/h optimal for most cars), 3) Use cruise control on highways, 4) Check tire pressure monthly (proper inflation saves 3%), 5) Remove excess weight (100kg = 1% less efficiency), 6) Remove roof racks when unused, 7) Close windows at high speed, 8) Use AC efficiently (24-26°C), 9) Plan routes to avoid traffic, 10) Combine errands, 11) Carpool (split fuel cost 2-4x), 12) Use public transport when possible, 13) Work from home 1-2 days/week, 14) Cycle/walk for short distances (<2 km), 15) Regular car maintenance, 16) Use recommended fuel grade, 17) Buy fuel during cooler hours (morning/evening — higher density), 18) Use fuel rewards/loyalty programs, 19) Compare prices at nearby stations, 20) Consider EV/hybrid for next car (60% lower fuel cost).

Global fuel price forecast 2026-2030: 1) PETROL: Expected to rise 5-10% annually due to carbon taxes, EV adoption reducing demand, geopolitical tensions, 2) DIESEL: Decline in demand as trucks go electric, prices may stabilize, 3) CNG/LNG: Transition fuel, prices rise with natural gas demand, 4) ELECTRICITY: Falling rapidly due to renewables (-5-10% per year), 5) HYDROGEN: Emerging, costs falling 15-20% per year, still expensive 2026, 6) SYNTHETIC FUELS (e-fuels): Niche, very expensive, 7) BIOFUELS: Stable demand, prices similar to petrol. Predictions: 1) By 2030, EVs will be 30% of new car sales globally, 2) Petrol demand peak: 2025-2027, 3) By 2035, many countries ban ICE sales (EU 2035, UK 2035, Norway 2025, California 2035), 4) Oil demand will decline 1-2% per year after 2027, 5) Petrol prices may stay high due to declining demand + supply cuts. Long-term investment in EV is wise.