2014 Porsche Boxster S — Full Specifications
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The 2014 Porsche Boxster S is a coupe powered by a 3.4L 6-cyl premium gasoline engine. Its most fuel-efficient configuration returns around 29 mpg (UK) / 24 mpg (US EPA) combined, with 26–29 mpg (UK) across all configurations. Owners often keep a Porsche Boxster S workshop manual to hand for servicing and repairs.
Related listing: see also the 2014 Porsche Boxster page for the base Boxster listing, which may cover additional engines and body styles.
Compared with the 2013 Porsche Boxster S: Fuel economy is essentially unchanged at around 29 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine | 3.4L 6-cyl |
|---|---|
| Transmission | Automatic (AM-S7) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | Rear-Wheel Drive |
| Body Style | Coupe |
| Fuel Economy (UK) | 29 combined / 25 urban / 35 extra-urban mpg |
| Fuel Economy (US EPA) | 24 combined / 21 city / 29 highway mpg |
| CO₂ Emissions | 231 g/km |
| EPA Greenhouse Gas Score | 6 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,400 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2014 Porsche Boxster S, all with the 3.4L 6-cyl engine. Combined fuel economy ranges from 22 to 24 mpg (US), or 26 to 29 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 3.4L 6-cyl | Automatic (AM-S7) | Rear-Wheel Drive | 29 | 24 (21/29) | 231 | $3,400 |
| 3.4L 6-cyl | Manual 6-spd | Rear-Wheel Drive | 26 | 22 (20/27) | 247 | $3,750 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
Owner Essentials for the 2014 Porsche Boxster S
Running Costs: 2014 Porsche Boxster S
Covering around 8,000 miles a year in a 2014 Porsche Boxster S at 29 mpg combined, expect roughly 1,254 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,400 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Only need this car occasionally? See our buy vs rent comparison.
2014 Porsche Boxster S Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
Recalls & Owner Complaints (NHTSA)
NHTSA lists 3 safety recall campaigns that include the 2014 Porsche Boxster S (as of 6 October 2026). Most affected areas: Power train (1), Latches/locks/linkages (1), Electrical system (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
- Power train — campaign 21V679000, reported 1 September 2021. Risk: A carrier fracture may cause a loss of control, increasing the risk of a crash.
- Latches/locks/linkages — campaign 14V698000, reported 4 November 2014. Risk: A failure of the hood latching mechanism may cause the hood to suddenly open during vehicle operation and will severely impede the driver's ability to see out the front windshield, increasing the risk of a…
- Electrical system — campaign 13V502000, reported 17 October 2013. Risk: The intermittent plug may cause the passenger seat frontal and knee airbags may be deactivated. In the event of a crash necessitating airbag deployment, this may increase the risk of injury to the front…
Owners have filed 2 complaints with NHTSA about the 2014 Porsche Boxster S. The most-reported areas are Engine (1), Air bags (1), Structure (1).
Used-buyer checklist for the 2014 Porsche Boxster S
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Transmission & drivetrain (1 recall campaign) — On the test drive, watch for hesitation, jerking or slipping between gears and ask for transmission service history.
- Doors & latches (1 recall campaign) — Test every door, boot and bonnet latch and the central locking.
- Electrical system (1 recall campaign) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Engine (1 owner complaint) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
How does the Porsche Boxster S compare to similar coupes? For context, coupes in our database average around 25 mpg (UK) combined — this model's 29 mpg figure is 4 mpg better than that average. Its 231 g/km CO₂ figure is 47 g/km lower than the 278 g/km average for coupes on this site. This comparison is based on 1072 coupes in our dataset.
Porsche models in our database average about 26 mpg (UK) combined on their most efficient configuration; the 2014 Porsche Boxster S's 29 mpg is 3 mpg above that make average. Its 231 g/km CO₂ figure is 23 g/km lower than the 254 g/km Porsche average.
Of the 11 Porsche Boxster S model years we cover, the 2014 is the most economical on its best configuration (29 mpg UK combined). See every Porsche Boxster S year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2014 Porsche Boxster S
Frequently Asked Questions
What engine does the 2014 Porsche Boxster S have?
It's fitted with a 3.4L 6-cyl premium gasoline engine, paired with a automatic (am-s7) transmission.
What is the fuel economy of the 2014 Porsche Boxster S?
The most efficient configuration returns around 29 mpg (UK) combined, or 24 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 26 to 29 mpg.
How much does the 2014 Porsche Boxster S cost to fuel per year?
The US EPA estimates about $3,400 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
Does the 2014 Porsche Boxster S have any recalls?
NHTSA lists 3 safety recall campaigns that include the 2014 Porsche Boxster S (as of 6 October 2026). Most affected areas: Power train (1), Latches/locks/linkages (1), Electrical system (1). A campaign often covers several model years or models, so check your own VIN to see whether your car is affected.
What are the most common problems reported for the 2014 Porsche Boxster S?
Among the 2 owner complaints filed with NHTSA, the most-reported areas are Engine (1 complaint), Air bags (1 complaint), Structure (1 complaint). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
Is the Porsche Boxster S's fuel economy good for a coupe?
Yes — it returns around 29 mpg (UK) combined, against a same-body-style average of roughly 25 mpg among the coupes we track, making it one of the more efficient options in its class.