UCFC

Automotive

Used Car Fuel Cost Projection Calculator

Blend city and highway consumption, calculate first-year fuel cost, and project final-year cost from independent distance and price trends.

Year 1 driving distance (km)Annual distance change (%)City distance share (%)City consumption (L/100 km)Highway consumption (L/100 km)Year 1 fuel price per literAnnual fuel-price change (%)Projection years

Weighted fuel consumption-

Year 1 fuel volume-

Year 1 fuel cost-

Final-year distance-

Final-year fuel price-

Final-year fuel cost-

Year 1 fuel cost per km-

Decision view

Used-car fuel cost and distance trend

Used-car fuel cost and distance trendAnnual fuel cost is drawn as an area while annual distance is drawn as a separate trend line.

Exact scenario comparisonAnnual fuel-price change (%) changes while all other entered assumptions remain constant.

Annual fuel-price change (%)	Weighted fuel consumption	Year 1 fuel volume	Year 1 fuel cost	Final-year distance	Final-year fuel price	Final-year fuel cost	Year 1 fuel cost per km

Period-by-period detail

Annual used-car distance, fuel, and cost projection

Every year independently compounds distance and fuel price while holding the entered city-highway consumption mix constant.

How to use Used Car Fuel Cost Projection Calculator

Enter annual distance and how it changes over time.
Enter city/highway consumption and city share.
Enter starting fuel price, price trend, and projection years.

Calculator guide

Understanding Used Car Fuel Cost Projection Calculator

Used-car fuel cost depends on both fuel economy and the path of future distance and fuel prices.

Blend city and highway consumption The city share uses 55%, leaving 45% for highway driving.

Calculate first-year fuel volume Liters per 100 km are scaled by annual kilometers.

Calculate first-year fuel cost Fuel volume multiplied by price gives the first-year cost.

Project final-year distance and price A 7-year horizon has six compounding intervals after year 1.

Calculation method

How the calculation works

Blend city and highway consumption by entered distance share, then independently compound annual distance and fuel price across the projection. Weight city and highway liters per 100 km by city share, calculate fuel liters from distance, then compound distance and fuel price separately through the horizon.

Detailed calculation process

Project fuel volume and fuel cost over the ownership horizon

The default drives 18,000 km in year 1, blends 55% city driving at 10.5 L/100 km with highway use at 7.2 L/100 km, starts fuel at $1.65/L, decreases distance 2% per year, and increases fuel price 3% per year for 7 years.

General formula: C_w = (C_city h + C_hwy(100-h))/100L_1 = D_1 C_w / 100Cost_1 = L_1 p_1D_Y = D_1(1+a/100)^(Y-1)p_Y = p_1(1+b/100)^(Y-1)Cost_Y = D_Y C_w p_Y / 100 The city-highway blend is fixed from the entered share. Distance and fuel price are then compounded independently so the final-year cost reflects both trends.

What each symbol means

C_w Weighted fuel consumption (L/100 km).

C_city, C_hwy City and highway consumption (L/100 km).

h City distance share (%).

D_1, D_Y Year-1 and final-year driving distance (km/year).

p_1, p_Y Year-1 and final-year fuel price ($/L).

a, b, Y Annual distance change (%), annual fuel-price change (%), and projection years (years).

Worked substitution with the default inputs

1. Blend city and highway consumption C_w = (10.5 x 55 + 7.2 x 45)/100 = 9.015 L/100 km The city share uses 55%, leaving 45% for highway driving.

2. Calculate first-year fuel volume L_1 = 18,000 x 9.015 / 100 = 1,622.7 L Liters per 100 km are scaled by annual kilometers.

3. Calculate first-year fuel cost Cost_1 = 1,622.7 x 1.65 = $2,677.455 Fuel volume multiplied by price gives the first-year cost.

4. Project final-year distance and price D_7 = 18,000 x 0.98^6 = 15,945.162856 kmp_7 = 1.65 x 1.03^6 = $1.970186/L A 7-year horizon has six compounding intervals after year 1.

5. Reconcile final-year cost Cost_7 = 15,945.162856 x 9.015 / 100 x 1.970186 = $2,832.056953 Lower distance is offset by the higher fuel price in the final-year result.

The default first-year fuel cost is $2,677.46 and the final-year fuel cost is $2,832.06.

Purpose-built visual

Distance and fuel-cost trend with cost area

The chart plots annual distance and fuel cost together so the user can see why cost may rise even when kilometers fall.

Live The drawing is regenerated from the current inputs and calculated outputs.

Specific The chart type matches this calculator's math rather than a generic result card.

Auditable The plotted values reconcile with the formula steps and result fields.

Worked situations

Practical examples

The default drives 18,000 km in year 1, blends 55% city driving at 10.5 L/100 km with highway use at 7.2 L/100 km, starts fuel at $1.65/L, decreases distance 2% per year, and increases fuel price 3% per year for 7 years.
The default first-year fuel cost is $2,677.46 and the final-year fuel cost is $2,832.06.

Better inputs

Useful tips

Match annual distance, fuel economy, and fuel price to one unit system before calculating yearly fuel demand.
Use a realistic city-highway mix for the specific vehicle rather than the best published highway figure.
Change fuel economy and fuel price independently to see whether efficiency or market price drives annual cost.

Before relying on the result

Limitations and common mistakes

Traffic, idling, weather, tires, load, maintenance, fuel grade, and route mix can change real consumption.
The city share is held constant across the projection.
Fuel price uses one smooth annual trend rather than monthly volatility.

Reference

Key terms

Weighted consumption: City and highway fuel use blended by distance share.
Projection interval: One annual step in the forecast table.
Final-year cost: The annual fuel cost in the last modeled projection year.

Important note

Calculated from the entered vehicle and operating values. Actual prices, financing terms, efficiency, maintenance, insurance, taxes, and resale outcomes can differ.

Frequently asked questions

Why does final-year cost rise while distance falls?

The default fuel-price increase outweighs the distance decrease.

Is city share recalculated each year?

No. The entered city share is held constant.

Can fuel price change be negative?

Yes, a negative value models a declining price scenario.

Does this include maintenance?

No. This page only models fuel cost.