2015 Porsche 911 Carrera S — Full Specifications
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The 2015 Porsche 911 Carrera S is a coupe powered by a 3.8L 6-cyl premium gasoline engine. It returns around 26 mpg (UK) / 22 mpg (US EPA) combined. Owners often keep a Porsche 911 Carrera S workshop manual to hand for servicing and repairs.
Related listing: see also the 2015 Porsche 911 Carrera page for the base 911 Carrera listing, which may cover additional engines and body styles.
Compared with the 2014 Porsche 911 Carrera S: Fuel economy is essentially unchanged at around 26 mpg (UK) combined. The engine line-up listed by EPA is unchanged.
Full Specifications
| Engine | 3.8L 6-cyl |
|---|---|
| Transmission | Automatic (AM-S7) |
| Fuel Type | Premium Gasoline |
| Powertrain | Conventional |
| Drive | Rear-Wheel Drive |
| Body Style | Coupe |
| Passenger Volume (EPA) | 70 cu ft (1,982 L) |
| Luggage Volume (EPA) | 5 cu ft (142 L) |
| Fuel Economy (UK) | 26 combined / 23 urban / 32 extra-urban mpg |
| Fuel Economy (US EPA) | 22 combined / 19 city / 27 highway mpg |
| CO₂ Emissions | 249 g/km |
| EPA Greenhouse Gas Score | 5 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $3,750 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 2 configurations for the 2015 Porsche 911 Carrera S, all with the 3.8L 6-cyl engine. 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 |
|---|---|---|---|---|---|---|
| 3.8L 6-cyl | Automatic (AM-S7) | Rear-Wheel Drive | 26 | 22 (19/27) | 249 | $3,750 |
| 3.8L 6-cyl | Manual 7-spd | Rear-Wheel Drive | 26 | 22 (19/27) | 253 | $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.
EPA measures interior passenger volume at 70 cubic feet (about 1,982 litres) and luggage volume at 5 cubic feet (about 142 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2015 Porsche 911 Carrera S
Running Costs: 2015 Porsche 911 Carrera S
Covering around 8,000 miles a year in a 2015 Porsche 911 Carrera S at 26 mpg combined, expect roughly 1,399 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $3,750 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.
2015 Porsche 911 Carrera 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 no safety recall campaigns for the 2015 Porsche 911 Carrera S as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
Owners have filed 8 complaints with NHTSA about the 2015 Porsche 911 Carrera S. The most-reported areas are Electrical system (4), Engine (3), Vehicle speed control (1). Complaints include 1 reported fire.
Used-buyer checklist for the 2015 Porsche 911 Carrera S
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Electrical system (4 owner complaints) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Engine (3 owner complaints) — Listen for unusual noise on a cold start, check for warning lights and ask for the service records.
- Throttle & cruise control (1 owner complaint) — Check throttle response and cruise control are smooth, and ask about any software or throttle recalls.
- Brakes (1 owner complaint) — Brake firmly from speed and look for pulling, vibration or a soft pedal; ask for brake service history.
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 911 Carrera S compare to similar coupes? Coupes in our database average around 25 mpg (UK) combined — this model sits close to that average, within 1 mpg. Its 249 g/km CO₂ figure is 29 g/km lower than the 278 g/km average for coupes on this site. This comparison is based on 1072 coupes in our dataset.
At 26 mpg (UK) combined it sits close to the 26 mpg average for Porsche models in our database.
Of the 17 Porsche 911 Carrera S model years we cover, the 2015 ranks 4th for combined fuel economy on its best configuration (26 mpg UK combined, against a high of 29 mpg). See every Porsche 911 Carrera 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 2015 Porsche 911 Carrera S
Frequently Asked Questions
What engine does the 2015 Porsche 911 Carrera S have?
It's fitted with a 3.8L 6-cyl premium gasoline engine, paired with a automatic (am-s7) transmission.
What is the fuel economy of the 2015 Porsche 911 Carrera S?
The most efficient configuration returns around 26 mpg (UK) combined, or 22 mpg on the US EPA cycle.
How much does the 2015 Porsche 911 Carrera S cost to fuel per year?
The US EPA estimates about $3,750 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 2015 Porsche 911 Carrera S have any recalls?
NHTSA lists no safety recall campaigns for the 2015 Porsche 911 Carrera S as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
What are the most common problems reported for the 2015 Porsche 911 Carrera S?
Among the 8 owner complaints filed with NHTSA, the most-reported areas are Electrical system (4 complaints), Engine (3 complaints), Vehicle speed control (1 complaint). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
How much interior and luggage space does the 2015 Porsche 911 Carrera S have?
EPA measures interior passenger volume at 70 cubic feet (about 1,982 litres) and luggage volume at 5 cubic feet (about 142 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.
Is the Porsche 911 Carrera S's fuel economy good for a coupe?
Yes — it returns around 26 mpg (UK) combined, against a same-body-style average of roughly 25 mpg among the coupes we track.