2015 Porsche Cayenne Gas Tank Size & Fuel Capacity
Fuel tank capacity
21.1–26.4gal · 80–100 L
The 2015 Porsche Cayenne has a fuel tank capacity of 21.1 to 26.4 gallons (80–100 liters), depending on the trim. The most common size is 26.4 gallons, used on 3 trims.
A full tank is good for roughly 506–766 highway miles or 370–528 miles around town, going by the EPA ratings.
26.4 gal · Bigger than 90% of 2015 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- Pump & gauge parts
- FAQ
2015 Porsche Cayenne fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Powertrain
- Engine
All 4 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | Fuel | MPG city / hwy | Range city / hwy |
|---|---|---|---|---|---|---|
| S E-Hybrid 4dr SUV AWD 3.0L 6cyl S/C 8A · AWD · Premium (required) Plug-in hybrid MPG 21 / 24Range 443 / 506 mi | 3.0L 6cyl S/C 8A Plug-in hybrid | AWD | 21.1 gal80 L | Premiumrequired | 21 / 24 | 443 / 506 mi |
| Diesel 4dr SUV AWD 3.0L 6cyl Turbodiesel 8A · AWD · Diesel Diesel MPG 20 / 29Range 528 / 766 mi | 3.0L 6cyl Turbodiesel 8A Diesel | AWD | 26.4 gal100 L | Diesel | 20 / 29 | 528 / 766 mi |
| S 4dr SUV AWD 3.6L 6cyl Turbo 8A · AWD · Premium (required) MPG 17 / 24Range 449 / 634 mi | 3.6L 6cyl Turbo 8A | AWD | 26.4 gal100 L | Premiumrequired | 17 / 24 | 449 / 634 mi |
| Turbo 4dr SUV AWD 4.8L 8cyl Turbo 8A · AWD · Premium (required) MPG 14 / 21Range 370 / 554 mi | 4.8L 8cyl Turbo 8A | AWD | 26.4 gal100 L | Premiumrequired | 14 / 21 | 370 / 554 mi |
| No trim matches all of these filters. | ||||||
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG (worked out from the rated MPG where the EPA range wasn't published).
How far a 2015 Porsche Cayenne goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 23 MPG, a full 26.4-gallon tank covers about 607 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 26.4 | 766 | 528 |
| 3/4 | 19.8 | 574 | 396 |
| 1/2 | 13.2 | 383 | 264 |
| 1/4 | 6.6 | 191 | 132 |
| 1/8 | 3.3 | 96 | 66 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 652 gallons, roughly 25 full tanks.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
- EPA combined
- 17–23 MPG
- Tailpipe CO2
- 260–536 g/mi
- EPA greenhouse score
- 4–8 of 10
- Source
- EPA ratings
What it costs to fill up a 2015 Porsche Cayenne
$139.39 to fill the 26.4-gallon tank from empty with premium, at this week's US average of $5.28 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 21.1 gal | Premium | $5.28 | $111.41 | $83.56 |
| 26.4 gal | Premium | $5.28 | $139.39 | $104.54 |
| 26.4 gal | Diesel | $6.35 | $167.64 | $125.73 |
By region, 26.4-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $130.15 |
| Midwest | $5.37 | $141.77 |
| Gulf CoastLowest | $4.57 | $120.65 |
| Rocky Mountain | $5.12 | $135.17 |
| West Coast | $6.08 | $160.51 |
| CaliforniaHighest | $6.36 | $167.90 |
Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.
Your own price
- 21.1-gallon tank$111.41
- 26.4-gallon tank$139.39
- A year of driving (15,000 mi)$3,443
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
Cayenne tank size in other years
The tank changed for 2015: 21.1–26.4 gal, down from 26.4 gal on the 2014 Cayenne.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2020 Cayenne | 19.8–23.7 gal | 545 mi |
| 2019 Cayenne | 23.7 gal | 545 mi |
| 2018 Cayenne | 21.1–26.4 gal | 634 mi |
| 2017 Cayenne | 21.1–26.4 gal | 634 mi |
| 2016 Cayenne | 21.1–26.4 gal | 766 mi |
| 2015 Cayenne | 21.1–26.4 gal | 766 mi |
| 2014 Cayenne | 26.4 gal | 766 mi |
| 2013 Cayenne | 26.4 gal | 739 mi |
| 2012 Cayenne | 22.4–26.4 gal | 581 mi |
| 2011 Cayenne | 22.4–26.4 gal | 581 mi |
| 2010 Cayenne | 26.4 gal | 528 mi |
2015 Porsche Cayenne vs similar 2015 SUVs
At 26.4 gallons, the Cayenne's largest tank ranks second of the six 2015 SUVs compared here. The Land Rover Range Rover Sport carries the most (27.7 gal) and the Lexus RX 450h the least (17.2 gal).
| 2015 model | Tank | Longest highway range |
|---|---|---|
| Land Rover Range Rover Sport | 27.7 gal | 637 mi |
| Porsche Cayenne | 21.1–26.4 gal | 766 mi |
| Mercedes-Benz M-Class | 24.6 gal | 713 mi |
| BMW X6 | 22.4 gal | 605 mi |
| Cadillac SRX | 21.0 gal | 504 mi |
| Lexus RX 450h | 17.2 gal | 482 mi |
Other 2015 SUVs of a similar size, one model per brand.
2015 Porsche Cayenne fuel system recalls
None of the 3 recalls NHTSA lists for the 2015 Porsche Cayenne involve the fuel system.
2015 Porsche Cayenne fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2015 Porsche Cayenne, so a failed pump or gauge is a normal repair. These are the part numbers the makers list for it.
As an Amazon Associate we earn from qualifying purchases.
Frequently asked questions
What is the fuel tank capacity of the 2015 Porsche Cayenne?
The 2015 Porsche Cayenne holds between 21.1 and 26.4 gallons, depending on the trim. 26.4 gallons is the usual size; the smaller 21.1-gallon tank is on the S E-Hybrid 4dr SUV AWD.
How many gallons and liters does the 2015 Porsche Cayenne gas tank hold?
The 2015 Porsche Cayenne tank holds 80–100 liters, or 21.1–26.4 gallons in US gallons.
Which 2015 Porsche Cayenne has the biggest gas tank?
The 26.4-gallon tank is on the Diesel 4dr SUV AWD, S 4dr SUV AWD, Turbo 4dr SUV AWD. The smallest tank, 21.1 gallons, is on the S E-Hybrid 4dr SUV AWD.
Does the 2015 Porsche Cayenne tank change with the powertrain?
Yes. Plug-in hybrid: 21.1 gal; Gas: 26.4 gal; Diesel: 26.4 gal.
How far can a 2015 Porsche Cayenne go on a full tank?
About 506–766 miles on the highway and 370–528 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 2015 Porsche Cayenne go on a quarter tank?
About 191 highway miles or 132 in town from the 26.4-gallon tank, which has roughly 6.6 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2015 Porsche Cayenne take?
Premium unleaded (required), or Diesel fuel, depending on the engine. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2015 Porsche Cayenne?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 26.4-gallon tank from empty costs $139.39. It ranges from $120.65 in the Gulf Coast to $167.90 in California.
How much does a full tank of gas weigh in a 2015 Porsche Cayenne?
About 185 pounds for the 26.4-gallon tank. Diesel weighs roughly 7 pounds a gallon.
Does the 2015 Porsche Cayenne have a bigger gas tank than the Mercedes-Benz M-Class?
Yes. The 2015 Porsche Cayenne holds up to 26.4 gallons; the 2015 Mercedes-Benz M-Class holds up to 24.6.
Has the 2015 Porsche Cayenne had a fuel pump or fuel system recall?
No. None of the 3 recalls NHTSA lists for the 2015 Porsche Cayenne involve the fuel system.
Sources
- Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
- MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.
- Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
- Recalls: NHTSA recall database (Porsche fuel system recalls).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.