Porsche Boxster S MPG and Fuel Economy
Porsche have been manufacturing models of Boxster S for 21 years, with the latest vehicle in 2020 having a combined MPG of 21.
The estimated fuel cost for the 2020 Porsche Boxster S is $3,500 per year.
Government regulators have estimated that value based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.
💵 Compared to an average vehicle over 5 years, you will spend $6,000 more on fuel driving a 2020 Porsche Boxster S.
🛢 The Porsche Boxster S will consume roughly 14 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.
💨 For every mile driven, the Porsche Boxster S will emit 423 grams of CO2, which is about 6,345,000 grams of CO2 per year.
🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO2 per year. This means that roughly 303 trees would be needed to offset emissions from the Porsche Boxster S.
The table below is a complete list of the 21 Porsche Boxster S fuel efficiency specifications we have data for.
Click any vehicle link to see a more detailed breakdown of the car, miles per gallon, emissions, and more.
| Vehicle | Combined MPG | Fuel Cost |
|---|---|---|
| 2020 Porsche Boxster S | 21 | $3,500 |
| 2019 Porsche Boxster S | 22 | $3,350 |
| 2018 Porsche Boxster S | 22 | $3,350 |
| 2017 Porsche Boxster S | 22 | $3,350 |
| 2016 Porsche Boxster S | 22 | $3,350 |
| 2015 Porsche Boxster S | 22 | $3,350 |
| 2014 Porsche Boxster S | 22 | $3,350 |
| 2013 Porsche Boxster S | 22 | $3,350 |
| 2012 Porsche Boxster S | 23 | $3,200 |
| 2011 Porsche Boxster S | 22 | $3,350 |
| 2010 Porsche Boxster S | 23 | $3,200 |
| 2009 Porsche Boxster S | 23 | $3,200 |
| 2008 Porsche Boxster S | 21 | $3,500 |
| 2007 Porsche Boxster S | 21 | $3,500 |
| 2006 Porsche Boxster S | 19 | $3,900 |
| 2005 Porsche Boxster S | 20 | $3,700 |
| 2004 Porsche Boxster S | 19 | $3,900 |
| 2003 Porsche Boxster S | 19 | $3,900 |
| 2002 Porsche Boxster S | 18 | $4,100 |
| 2001 Porsche Boxster S | 18 | $4,100 |
| 2000 Porsche Boxster S | 17 | $4,350 |
Link To or Reference This Page
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"Porsche Boxster S MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/porsche/boxster-s.
"Porsche Boxster S MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/porsche/boxster-s. Accessed January 3, 2026.
Porsche Boxster S MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/porsche/boxster-s.