2003 · Two-Seater · Gas

2003 Porsche Boxster MPG & fuel economy

The 2003 Porsche Boxster is a two-seater offered in 4 EPA-rated configurations. The most efficient version returns 21 MPG combined (18 city / 27 highway) on premium gasoline. Across the lineup, combined ratings range from 18 to 21 MPG. That's up 1 MPG from the 2002 model. Among 25 two-seaters rated for 2003, it ranks 5th for lowest fuel cost. At 15,000 miles a year with $3.95/gal premium gas, it costs about $2,821 a year to fuel.

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Combined 21 MPG 18 MPG city · 27 MPG hwy

Driving range — not published for this model

Your fuel cost $2,821 15,000 mi/yr · $18.81 per 100 mi

Class rank, 2003 #5 of 25 Two-Seaters by fuel cost

What will it cost you?

Your mileage and prices are saved and used across the site.

Miles per year Premium gas $/gal

Fuel average

The 2003 Porsche Boxster's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.5 km/L on the highway.

	MPG	km/L	L/100 km
City	18	7.7	13.1
Highway	27	11.5	8.7
Combined	21	8.9	11.2

How it ranks among 2003 Two-Seaters

Full class ranking →

1Honda Insight53 MPG $877
2Toyota MR225 MPG $1,860
3Mazda MX-5 Miata23 MPG $2,576
4Mercedes-Benz SLK-Class22 MPG $2,693
5Porsche Boxster21 MPG $2,821
···
25Ferrari Enzo Ferrari8 MPG $7,406

2003 BoxsterOther two-seatersClass median: $3,485/yr

Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.

Boxster MPG across model years

Full history →

4 EPA-rated configurations

Configuration	Type	City	Hwy	Combined	Range	Your cost / yr
RWD · 2.7L 6-cyl · 5-speed manual Boxster	Gas	18 MPG	27 MPG	21 MPG	—	$2,821
RWD · 2.7L 6-cyl · 5-speed automatic Boxster	Gas	16 MPG	24 MPG	19 MPG	—	$3,118
RWD · 3.2L 6-cyl · 6-speed manual Boxster S	Gas	16 MPG	24 MPG	19 MPG	—	$3,118
RWD · 3.2L 6-cyl · 5-speed automatic Boxster S	Gas	15 MPG	24 MPG	18 MPG	—	$3,292

Specs (most efficient configuration)

Fuel: Premium gasoline
Engine / motor: 2.7L 6-cyl
Transmission: 5-speed manual
Drivetrain: RWD
Tailpipe CO₂: 423 g/mi

2003 Porsche Boxster vs. rivals

vs Audi TT Roadster 21 MPG · $2,821/yr Same fuel cost vs BMW Z4 21 MPG · $2,821/yr Same fuel cost vs Mercedes-Benz SLK-Class 22 MPG · $2,693/yr SLK-Class saves $128/yr vs Acura NSX 18 MPG · $3,292/yr Boxster saves $470/yr vs Mercedes-Benz SL-Class 16 MPG · $3,703/yr Boxster saves $882/yr vs BMW Z8 15 MPG · $3,950/yr Boxster saves $1,129/yr vs BMW Alpina Roadster 15 MPG · $3,950/yr Boxster saves $1,129/yr vs Maserati Spyder 12 MPG · $4,938/yr Boxster saves $2,116/yr

Compare the 2003 Boxster

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Frequently asked questions

What is the gas mileage of the 2003 Porsche Boxster?

Up to 21 MPG combined (18 city / 27 highway); ratings range from 18 to 21 MPG depending on configuration.

What fuel does the 2003 Porsche Boxster use?

Premium gasoline (premium is required or recommended by the manufacturer).

What is the fuel average in km/L for the 2003 Porsche Boxster?