2004 Mitsubishi Diamante Sedan
3.5L 6-cyl · 4-speed automatic · FWD
GasolinePremiumMidsize Cars
Official EPA record #19787 from FuelEconomy.gov · data 2026-07-26 · every assumption below is yours to edit. How this is computed
Per month
$278.91
Per year
$3,347
Per mile
27.9¢/mi
5-year total
$16,735
Driving mix55% city / 45% highway
MPG
Your own average replaces the EPA laboratory values — never averaged together with them — and the driving-mix setting stops applying, because a figure you measured already contains your own mix.
Notes & official EPA estimate
674.8 gal of fuel / yeargasoline @ $4.96/galAt $5.96/gal: $335.14/mo
Official FuelEconomy.gov estimate: $4,300/year — assumes 15,000 miles/year and EPA price assumptions. The figures above use your inputs instead.
Compare with another vehiclePrices: EPA national averages, Jul 24, 2026 — override anytime.
At 12,000 miles per year (55% city / 45% highway) with EPA national-average prices ($4.96/gal premium), this 2004 Mitsubishi Diamante Sedan costs about $278.91 per month in fuel — $3,347 per year, 27.9¢/mi, $16,735 over five years.Assumptions are editable below. Prices as of July 24, 2026 · EPA vehicle record #19787. EPA figures are laboratory estimates; real-world cost varies with driving conditions, weather, and where you buy energy.
Official EPA efficiency
| Measure | Value |
|---|---|
| City MPG | 15 |
| Highway MPG | 23 |
| Combined MPG | 18 |
Official EPA estimates
| Estimate | Value |
|---|---|
| Official annual fuel cost (15,000 mi/yr) | $4,300/yr |
| Tailpipe CO₂ | 494 g/mi |
| EPA smog rating (BIN 9) | 1/10 |
Source: U.S. EPA / DOE FuelEconomy.gov, vehicle record #19787 (record updated 2013-01-01). Snapshot processed 2026-07-26; page data last changed 2013-01-01.