2015 Cadillac CTS Gas Tank Size & Fuel Capacity
Fuel tank capacity
19.0gal · 72 L
The 2015 Cadillac CTS has a fuel tank capacity of 19.0 gallons (72 liters) on every trim.
A full tank is good for roughly 456–570 highway miles or 304–380 miles around town, going by the EPA ratings.
19.0 gal · Bigger than 56% of 2015 models we list.
Listed separately: 2015 Cadillac CTS-V Coupe (18.0 gal).
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- Pump & gauge parts
- FAQ
2015 Cadillac CTS fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Powertrain
- no difference
- Drive
- no difference
- Engine
- no difference
All 16 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | Fuel | MPG city / hwy | Range city / hwy |
|---|---|---|---|---|---|---|
| Luxury 4dr Sedan 2.0L 4cyl Turbo 6A · RWD · Premium (recommended) MPG 20 / 30Range 380 / 570 mi | 2.0L 4cyl Turbo 6A | RWD | 19.0 gal72 L | Premiumrecommended | 20 / 30 | 380 / 570 mi |
| Luxury 4dr Sedan 3.6L 6cyl 8A · RWD · Flex-fuel (gas or E85) MPG 18 / 29Range 342 / 551 mi | 3.6L 6cyl 8A Flex-fuel | RWD | 19.0 gal72 L | Flex-fuelgas or E85 | 18 / 29 | 342 / 551 mi |
| Luxury 4dr Sedan AWD 2.0L 4cyl Turbo 6A · AWD · Premium (recommended) MPG 19 / 28Range 361 / 532 mi | 2.0L 4cyl Turbo 6A | AWD | 19.0 gal72 L | Premiumrecommended | 19 / 28 | 361 / 532 mi |
| Luxury 4dr Sedan AWD 3.6L 6cyl 6A · AWD · Flex-fuel (gas or E85) MPG 18 / 26Range 342 / 494 mi | 3.6L 6cyl 6A Flex-fuel | AWD | 19.0 gal72 L | Flex-fuelgas or E85 | 18 / 26 | 342 / 494 mi |
| Performance 4dr Sedan 2.0L 4cyl Turbo 6A · RWD · Premium (recommended) MPG 20 / 30Range 380 / 570 mi | 2.0L 4cyl Turbo 6A | RWD | 19.0 gal72 L | Premiumrecommended | 20 / 30 | 380 / 570 mi |
| Performance 4dr Sedan 3.6L 6cyl 8A · RWD · Flex-fuel (gas or E85) MPG 18 / 29Range 342 / 551 mi | 3.6L 6cyl 8A Flex-fuel | RWD | 19.0 gal72 L | Flex-fuelgas or E85 | 18 / 29 | 342 / 551 mi |
| Performance 4dr Sedan AWD 2.0L 4cyl Turbo 6A · AWD · Premium (recommended) MPG 19 / 28Range 361 / 532 mi | 2.0L 4cyl Turbo 6A | AWD | 19.0 gal72 L | Premiumrecommended | 19 / 28 | 361 / 532 mi |
| Performance 4dr Sedan AWD 3.6L 6cyl 6A · AWD · Flex-fuel (gas or E85) MPG 18 / 26Range 342 / 494 mi | 3.6L 6cyl 6A Flex-fuel | AWD | 19.0 gal72 L | Flex-fuelgas or E85 | 18 / 26 | 342 / 494 mi |
| Premium 4dr Sedan 2.0L 4cyl Turbo 6A · RWD · Premium (recommended) MPG 20 / 30Range 380 / 570 mi | 2.0L 4cyl Turbo 6A | RWD | 19.0 gal72 L | Premiumrecommended | 20 / 30 | 380 / 570 mi |
| Premium 4dr Sedan 3.6L 6cyl 8A · RWD · Flex-fuel (gas or E85) MPG 18 / 29Range 342 / 551 mi | 3.6L 6cyl 8A Flex-fuel | RWD | 19.0 gal72 L | Flex-fuelgas or E85 | 18 / 29 | 342 / 551 mi |
| Premium 4dr Sedan AWD 2.0L 4cyl Turbo 6A · AWD · Premium (recommended) MPG 19 / 28Range 361 / 532 mi | 2.0L 4cyl Turbo 6A | AWD | 19.0 gal72 L | Premiumrecommended | 19 / 28 | 361 / 532 mi |
| Premium 4dr Sedan AWD 3.6L 6cyl 6A · AWD · Flex-fuel (gas or E85) MPG 18 / 26Range 342 / 494 mi | 3.6L 6cyl 6A Flex-fuel | AWD | 19.0 gal72 L | Flex-fuelgas or E85 | 18 / 26 | 342 / 494 mi |
| Standard 4dr Sedan 2.0L 4cyl Turbo 6A · RWD · Premium (recommended) MPG 20 / 30Range 380 / 570 mi | 2.0L 4cyl Turbo 6A | RWD | 19.0 gal72 L | Premiumrecommended | 20 / 30 | 380 / 570 mi |
| Standard 4dr Sedan AWD 2.0L 4cyl Turbo 6A · AWD · Premium (recommended) MPG 19 / 28Range 361 / 532 mi | 2.0L 4cyl Turbo 6A | AWD | 19.0 gal72 L | Premiumrecommended | 19 / 28 | 361 / 532 mi |
| Vsport 4dr Sedan 3.6L 6cyl Turbo 8A · RWD · Premium (required) MPG 16 / 24Range 304 / 456 mi | 3.6L 6cyl Turbo 8A | RWD | 19.0 gal72 L | Premiumrequired | 16 / 24 | 304 / 456 mi |
| Vsport Premium 4dr Sedan 3.6L 6cyl Turbo 8A · RWD · Premium (required) MPG 16 / 24Range 304 / 456 mi | 3.6L 6cyl Turbo 8A | RWD | 19.0 gal72 L | Premiumrequired | 16 / 24 | 304 / 456 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.
How far a 2015 Cadillac CTS 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 24 MPG, a full 19.0-gallon tank covers about 456 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 19.0 | 570 | 380 |
| 3/4 | 14.3 | 428 | 285 |
| 1/2 | 9.5 | 285 | 190 |
| 1/4 | 4.8 | 143 | 95 |
| 1/8 | 2.4 | 71 | 48 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 625 gallons, roughly 33 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
- 18–24 MPG
- Tailpipe CO2
- 374–480 g/mi
- EPA greenhouse score
- 4–6 of 10
- Source
- EPA ratings
What it costs to fill up a 2015 Cadillac CTS
$100.32 to fill the 19.0-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 |
|---|---|---|---|---|
| 19.0 gal | Premium | $5.28 | $100.32 | $75.24 |
| 19.0 gal | Regular | $4.27 | $81.13 | $60.85 |
| 19.0 gal | E85 (flex-fuel trims) | $3.31 | $62.89 | $47.17 |
By region, 19.0-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $93.67 |
| Midwest | $5.37 | $102.03 |
| Gulf CoastLowest | $4.57 | $86.83 |
| Rocky Mountain | $5.12 | $97.28 |
| West Coast | $6.08 | $115.52 |
| CaliforniaHighest | $6.36 | $120.84 |
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
- 19.0-gallon tank$100.32
- A year of driving (15,000 mi)$3,300
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
CTS tank size in other years
The 2015 CTS uses the same 19.0 gal tank as the 2014 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2019 CTS | 19.0 gal | 570 mi |
| 2018 CTS | 19.0 gal | 570 mi |
| 2017 CTS | 19.0 gal | 570 mi |
| 2016 CTS | 19.0 gal | 589 mi |
| 2015 CTS | 19.0 gal | 570 mi |
| 2014 CTS | 19.0 gal | 570 mi |
| 2013 CTS | 18.0 gal | 486 mi |
| 2012 CTS | 18.0 gal | 486 mi |
| 2011 CTS | 18.0 gal | 486 mi |
| 2010 CTS | 18.0 gal | 486 mi |
2015 Cadillac CTS vs similar 2015 sedans
At 19.0 gallons, the CTS's largest tank ranks third of the seven 2015 sedans compared here. The INFINITI Q40 carries the most (20.0 gal) and the Lexus GS 350 the least (17.4 gal).
| 2015 model | Tank | Longest highway range |
|---|---|---|
| INFINITI Q40 | 20.0 gal | 540 mi |
| Audi A6 | 19.2–19.8 gal | 730 mi |
| Cadillac CTS | 19.0 gal | 570 mi |
| Acura RLX | 18.5 gal | 574 mi |
| Jaguar XF | 18.4 gal | 552 mi |
| Lincoln MKZ | 13.5–17.5 gal | 545 mi |
| Lexus GS 350 | 17.4 gal | 505 mi |
Other 2015 sedans of a similar size, one model per brand.
2015 Cadillac CTS fuel system recalls
None of the 4 recalls NHTSA lists for the 2015 Cadillac CTS involve the fuel system.
2015 Cadillac CTS fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2015 Cadillac CTS, so a failed pump or gauge is a normal repair. These are the part numbers the makers list for it.
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Frequently asked questions
What is the fuel tank capacity of the 2015 Cadillac CTS?
The 2015 Cadillac CTS holds 19.0 gallons (72 liters) on every trim we list.
How many gallons and liters does the 2015 Cadillac CTS gas tank hold?
The 2015 Cadillac CTS tank holds 72 liters, or 19.0 gallons in US gallons.
Does the 2015 Cadillac CTS tank change with the powertrain?
No. Gas and Flex-fuel (E85) versions of the 2015 Cadillac CTS use the same 19.0 gal tank.
Does AWD change the 2015 Cadillac CTS gas tank?
No. RWD and AWD versions of the 2015 Cadillac CTS use the same 19.0 gal tank.
How far can a 2015 Cadillac CTS go on a full tank?
About 456–570 miles on the highway and 304–380 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 Cadillac CTS go on a quarter tank?
About 143 highway miles or 95 in town from the 19.0-gallon tank, which has roughly 4.8 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2015 Cadillac CTS take?
Premium unleaded (recommended), or Flex-fuel (unleaded/E85), or Premium unleaded (required), 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 Cadillac CTS?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 19.0-gallon tank from empty costs $100.32. It ranges from $86.83 in the Gulf Coast to $120.84 in California.
How much does a full tank of gas weigh in a 2015 Cadillac CTS?
About 118 pounds for the 19.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2015 Cadillac CTS have a bigger gas tank than the Lincoln MKZ?
Yes. The 2015 Cadillac CTS holds up to 19.0 gallons; the 2015 Lincoln MKZ holds up to 17.5.
Has the 2015 Cadillac CTS had a fuel pump or fuel system recall?
No. None of the 4 recalls NHTSA lists for the 2015 Cadillac CTS 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 (Cadillac 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.