2018 Audi Q5 Gas Tank Size & Fuel Capacity
Fuel tank capacity
18.5gal · 70 L
The 2018 Audi Q5 has a fuel tank capacity of 18.5 gallons (70 liters) on every trim.
A full tank is good for roughly 500 highway miles or 426 miles around town, going by the EPA ratings.
18.5 gal · Bigger than 53% of 2018 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- FAQ
2018 Audi Q5 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Engine
- no difference
All 6 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 2.0T Premium Plus quattro 4dr SUV AWD (built to 6/18) 2.0L 4cyl 7AM · AWD MPG 23 / 27Range 426 / 500 mi | 2.0L 4cyl 7AM | AWD | 18.5 gal70 L | 23 / 27 | 426 / 500 mi | |
| 2.0T Premium Plus quattro Summer of Audi 4dr SUV AWD 2.0L 4cyl Turbo 7AM · AWD MPG 23 / 27Range 426 / 500 mi | 2.0L 4cyl Turbo 7AM | AWD | 18.5 gal70 L | 23 / 27 | 426 / 500 mi | |
| 2.0T Premium quattro 4dr SUV AWD (built to 6/18) 2.0L 4cyl 7AM · AWD MPG 23 / 27Range 426 / 500 mi | 2.0L 4cyl 7AM | AWD | 18.5 gal70 L | 23 / 27 | 426 / 500 mi | |
| 2.0T Premium quattro Summer of Audi 4dr SUV AWD 2.0L 4cyl Turbo 7AM · AWD MPG 23 / 27Range 426 / 500 mi | 2.0L 4cyl Turbo 7AM | AWD | 18.5 gal70 L | 23 / 27 | 426 / 500 mi | |
| 2.0T Prestige quattro 4dr SUV AWD (built to 6/18) 2.0L 4cyl 7AM · AWD MPG 23 / 27Range 426 / 500 mi | 2.0L 4cyl 7AM | AWD | 18.5 gal70 L | 23 / 27 | 426 / 500 mi | |
| 2.0T Prestige quattro Summer of Audi 4dr SUV AWD 2.0L 4cyl Turbo 7AM · AWD MPG 23 / 27Range 426 / 500 mi | 2.0L 4cyl Turbo 7AM | AWD | 18.5 gal70 L | 23 / 27 | 426 / 500 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 2018 Audi Q5 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 25 MPG, a full 18.5-gallon tank covers about 463 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 18.5 | 500 | 426 |
| 3/4 | 13.9 | 375 | 319 |
| 1/2 | 9.3 | 250 | 213 |
| 1/4 | 4.6 | 125 | 106 |
| 1/8 | 2.3 | 62 | 53 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 600 gallons, roughly 32 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
- 25 MPG
- Tailpipe CO2
- 363 g/mi
- EPA greenhouse score
- 5 of 10
- Source
- EPA ratings
What it costs to fill up a 2018 Audi Q5
$97.68 to fill the 18.5-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 |
|---|---|---|---|---|
| 18.5 gal | Premium | $5.28 | $97.68 | $73.26 |
By region, 18.5-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $91.20 |
| Midwest | $5.37 | $99.34 |
| Gulf CoastLowest | $4.57 | $84.55 |
| Rocky Mountain | $5.12 | $94.72 |
| West Coast | $6.08 | $112.48 |
| CaliforniaHighest | $6.36 | $117.66 |
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
- 18.5-gallon tank$97.68
- A year of driving (15,000 mi)$3,168
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
Q5 tank size in other years
The tank changed for 2018: 18.5 gal, down from 19.8 gal on the 2017 Q5.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2023 Q5 | 14.3–18.5 gal | 537 mi |
| 2022 Q5 | 14.3–18.5 gal | 537 mi |
| 2021 Q5 | 14.3–18.5 gal | 518 mi |
| 2020 Q5 | 15.3–18.5 gal | 518 mi |
| 2019 Q5 | 18.5 gal | 500 mi |
| 2018 Q5 | 18.5 gal | 500 mi |
| 2017 Q5 | 19.8 gal | 535 mi |
| 2016 Q5 | 19.0–19.8 gal | 614 mi |
| 2015 Q5 | 19.0–19.8 gal | 614 mi |
| 2014 Q5 | 19.0–19.8 gal | 614 mi |
| 2013 Q5 | 19.0–19.8 gal | 570 mi |
2018 Audi Q5 vs similar 2018 SUVs
At 18.5 gallons, the Q5's largest tank ranks second of the seven 2018 SUVs compared here. The Porsche Macan carries the most (19.8 gal) and the Lexus NX 300 the least (15.9 gal).
| 2018 model | Tank | Longest highway range |
|---|---|---|
| Porsche Macan | 19.8 gal | 495 mi |
| Audi Q5 | 18.5 gal | 500 mi |
| Land Rover Discovery Sport | 18.0 gal | 450 mi |
| Mercedes-Benz GLC-Class | 13.2–17.4 gal | 487 mi |
| Alfa Romeo Stelvio | 16.9 gal | 473 mi |
| Acura RDX | 16.0 gal | 448 mi |
| Lexus NX 300 | 15.9 gal | 445 mi |
Other 2018 SUVs of a similar size, one model per brand.
2018 Audi Q5 fuel system recalls
None of the 6 recalls NHTSA lists for the 2018 Audi Q5 involve the fuel system.
Frequently asked questions
What is the fuel tank capacity of the 2018 Audi Q5?
The 2018 Audi Q5 holds 18.5 gallons (70 liters) on every trim we list.
How many gallons and liters does the 2018 Audi Q5 gas tank hold?
The 2018 Audi Q5 tank holds 70 liters, or 18.5 gallons in US gallons.
How far can a 2018 Audi Q5 go on a full tank?
About 500 miles on the highway and 426 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 2018 Audi Q5 go on a quarter tank?
About 125 highway miles or 106 in town from the 18.5-gallon tank, which has roughly 4.6 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2018 Audi Q5 take?
Premium unleaded (recommended). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2018 Audi Q5?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 18.5-gallon tank from empty costs $97.68. It ranges from $84.55 in the Gulf Coast to $117.66 in California.
How much does a full tank of gas weigh in a 2018 Audi Q5?
About 115 pounds for the 18.5-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2018 Audi Q5 have a bigger gas tank than the Alfa Romeo Stelvio?
Yes. The 2018 Audi Q5 holds up to 18.5 gallons; the 2018 Alfa Romeo Stelvio holds up to 16.9.
Has the 2018 Audi Q5 had a fuel pump or fuel system recall?
No. None of the 6 recalls NHTSA lists for the 2018 Audi Q5 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 (Audi 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.