- Newest year: 2005
- Gas
- Two-seaters
2003-2005 BMW Z4 MPG & Fuel Cost
3 model years · 20–21 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 7 of 10 two-seater configurations, MY2005. Ranked against all rated configurations, not sales-weighted.
2003-2005 BMW Z4 at a glance
The 2003-2005 BMW Z4 covers 3 model years in the EPA database (17 configurations in all), rated 20–21 MPG combined. The newest model year, 2005, costs about $3,830 a year to fuel for its most efficient version, the Roadster 2.5L 6-cyl RWD (21 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2004 and 2005.
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
2003-2005 BMW Z4 by model year
What the 2005 Roadster 2.5L 6-cyl RWD costs to drive
Per month
$319
$3,830 a year ÷ 12
Per 25 miles
$6.38
Per 100 miles
$25.53
Five years
$19,150
5 × the yearly cost, prices held at today's level
vs the two-seater median
$530less a year
Class median $4,360 a year, MY2005
Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).
2005 BMW Z4 MPG
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Versus 2004: The most efficient configuration stays at 21 MPG. Its annual cost stays at $3,830.
Gas configurations (5)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Roadster 2.5L 6-cyl RWD Manual 5-spd (Most efficient) | 2.5L 6-cyl | RWD | 18 | 26 | 21 | $3,830 |
| Roadster 2.5L 6-cyl RWD Automatic (S5) | 2.5L 6-cyl | RWD | 18 | 26 | 21 | $3,830 |
| Roadster 3.0L 6-cyl RWD Manual 6-spd | 3.0L 6-cyl | RWD | 18 | 27 | 21 | $3,830 |
| Roadster 3.0L 6-cyl RWD Automatic (S6) | 3.0L 6-cyl | RWD | 18 | 27 | 21 | $3,830 |
| Roadster 3.0L 6-cyl RWD Automatic (S5) | 3.0L 6-cyl | RWD | 17 | 25 | 20 | $4,020 |
5 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2004 BMW Z4 MPG
20–21 MPG · $3,830–$4,020/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Versus 2003: The most efficient configuration stays at 21 MPG. Its annual cost stays at $3,830.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Roadster 2.5L 6-cyl RWD Manual 5-spd (Most efficient) | 2.5L 6-cyl | RWD | 18 | 26 | 21 | $3,830 |
| Roadster 2.5L 6-cyl RWD Automatic (S5) | 2.5L 6-cyl | RWD | 18 | 26 | 21 | $3,830 |
| Roadster 2.5L 6-cyl RWD Automatic (S6) | 2.5L 6-cyl | RWD | 18 | 27 | 21 | $3,830 |
| Roadster 3.0L 6-cyl RWD Manual 6-spd | 3.0L 6-cyl | RWD | 18 | 27 | 21 | $3,830 |
| Roadster 3.0L 6-cyl RWD Automatic (S6) | 3.0L 6-cyl | RWD | 18 | 27 | 21 | $3,830 |
| Roadster 3.0L 6-cyl RWD Automatic (S5) | 3.0L 6-cyl | RWD | 17 | 25 | 20 | $4,020 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2003 BMW Z4 MPG
20–21 MPG · $3,830–$4,020/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Roadster 2.5L 6-cyl RWD Automatic (S5) (Most efficient) | 2.5L 6-cyl | RWD | 18 | 26 | 21 | $3,830 |
| Roadster 2.5L 6-cyl RWD Manual 5-spd | 2.5L 6-cyl | RWD | 18 | 26 | 21 | $3,830 |
| Roadster 3.0L 6-cyl RWD Manual 6-spd | 3.0L 6-cyl | RWD | 18 | 27 | 21 | $3,830 |
| Roadster 3.0L 6-cyl RWD Automatic (S6) | 3.0L 6-cyl | RWD | 18 | 27 | 21 | $3,830 |
| Roadster 2.5L 6-cyl RWD Automatic (S6) | 2.5L 6-cyl | RWD | 18 | 27 | 21 | $3,830 |
| Roadster 3.0L 6-cyl RWD Automatic (S5) | 3.0L 6-cyl | RWD | 18 | 25 | 20 | $4,020 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Fuel cost by state
Yearly cost of the Roadster 2.5L 6-cyl RWD: $4,560 in California and $3,320 in Texas, a $1,240 difference.
- California $4,560
- Washington $4,290
- New York $3,780
- Florida $3,490
- Texas $3,320
Similar cars
Closest combined MPG among MY2005 two-seater models.
Generations
Frequently asked questions
What gas mileage does the 2003-2005 BMW Z4 get?
EPA rates the 2003-2005 BMW Z4 at 20–21 MPG combined across 17 configurations and 3 model years. The most efficient version, the 2005 Roadster 2.5L 6-cyl RWD, is rated 21 MPG (18 city, 26 highway).
Which years had the best MPG in the 2003-2005 BMW Z4?
Every model year of the 2003-2005 BMW Z4 tops out at 21 MPG combined, so no year is better than another.
Did EPA ratings change during the 2003-2005 BMW Z4?
Yes. Ratings changed in 2004 and 2005.
How much does it cost to fuel a 2005 BMW Z4 per year?
Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the Roadster 2.5L 6-cyl RWD costs about $3,830 a year. Across all 5 configurations the cost runs $3,830–$4,020 a year. That is a $190 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2005 BMW Z4 100 miles?
About $25.53 per 100 miles for the Roadster 2.5L 6-cyl RWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $25.53 and $26.80 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2005 BMW Z4 more efficient in the city or on the highway?
The Roadster 2.5L 6-cyl RWD is rated 18 city and 26 highway MPG, so it is more efficient on the highway, by 8 MPG.
How does the 2005 BMW Z4 compare with other two-seater configurations?
The Roadster 2.5L 6-cyl RWD costs about $3,830 a year to fuel, $530 less than the class median of $4,360, and less than 7 of 10 two-seater configurations. The comparison covers all 69 rated two-seater configurations for MY2005, not weighted by sales.
Is the 2005 BMW Z4 different from the 2004 model?
The most efficient configuration stays at 21 MPG. Its annual cost stays at $3,830. EPA lists 5 configurations for 2005 against 6 configurations for 2004. See the 2004 BMW Z4 for that year.