The Mazda Millenia does 20.1 mpg combined (17.4 city, 25.4 highway), which works out to about $1,910 a year in fuel at $3.20 a gallon and 12,000 miles. Against other V6 cars it sits above the average of 19.9 mpg.
Every Mazda Millenia engine, compared
The Mazda Millenia was rated in a single specification, so its gas mileage does not vary by version — only by model year. Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 2.3L 6-cyl | 17.4 / 25.4 | 1995–2002 | $1,910 |
What that actually costs
The Mazda Millenia burns a gallon every 20.1 miles, so 12,000 miles takes about 597 gallons a year. At $3.20 that is what the table below adds up to.
| Measure | Value |
|---|---|
| Cost per mile | $0.159 |
| Fuel per year | $1,910 |
| Fuel over five years | $9,550 |
| Against other V6 cars | −$20 a year |
| EPA's own estimate | $3,825 a year |
City or highway — who is this car for
The Mazda Millenia gives up 8 mpg the moment you leave the motorway — 25.4 out there against 17.4 in town, a 46% drop worth $695 a year. A wide gap punishes stop-and-start traffic; a narrow one means the car doesn't care where you drive it.
| Measure | Value | Reading |
|---|---|---|
| City | 17.4 mpg | $2,207 a year if you only drive in town |
| Highway | 25.4 mpg | $1,512 a year if you mostly commute |
| Gap | +8 mpg (46%) | Wide — this car dislikes traffic |
How the Millenia changed over the years
The Millenia peaked in 1995 at 21 mpg (18 city, 26 highway) and was at its thirstiest in 2002 at 20 — 1 mpg apart, or $91 a year in fuel between buying one year and the other. The 2002 car does 20. Jumps usually mark a new generation or a new engine; dips often mean a heavier body or added all-wheel drive.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2002 | 17 / 25 | 1 | $1,920 | |
| 2001 | 17 / 25 | 1 | $1,920 | |
| 2000 | 17 / 25 | 1 | $1,920 | |
| 1999 | 17 / 25 | 1 | $1,920 | |
| 1998 | 17 / 25 | 1 | $1,920 | |
| 1997 | 18 / 26 | 1 | $1,920 | |
| 1996 | 18 / 26 | 1 | $1,920 | |
| 1995 | 18 / 26 | 1 | $1,829 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 8 EPA ratings of the Mazda Millenia — 1 engine across 1995–2002. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $3,825. Full method.
Frequently asked questions
What mpg does the Mazda Millenia get?
20.1 mpg combined on average — 17.4 in the city and 25.4 on the highway, per EPA ratings across 1995–2002.
How much does a Mazda Millenia cost in fuel per year?
About $1,910 at 12,000 miles and $3.20 a gallon — roughly $9,550 over five years, or 0.159 dollars a mile.
Which Millenia engine is the most economical?
The 2.3L 6-cyl at 20.1 mpg.
Is the Millenia good on fuel compared with similar cars?
Against other V6 cars it sits above the average of 19.9 mpg, computed across 4940 ratings.
Are these real-world Millenia figures?
No — they are EPA laboratory ratings, the same ones printed on the window sticker, and EPA's own annual fuel estimate for the Mazda Millenia is $3,825 against the $1,910 we compute at 12,000 miles. Expect a little worse in practice: the spread between the city and highway figures is smaller than the spread between two drivers of the same one.
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