2018 Bentley Mulsanne Gas Tank Size & Fuel Capacity
Fuel tank capacity
25.4gal · 96 L
The 2018 Bentley Mulsanne has a fuel tank capacity of 25.4 gallons (96 liters) on every trim.
A full tank is good for roughly 457 highway miles or 279 miles around town, going by the EPA ratings.
25.4 gal · Bigger than 89% 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 Bentley Mulsanne fuel tank capacity by trim
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 4dr Sedan 6.8L 8cyl Turbo 8A · RWD MPG 11 / 18Range 279 / 457 mi | 6.8L 8cyl Turbo 8A | RWD | 25.4 gal96 L | 11 / 18 | 279 / 457 mi | |
| Speed 4dr Sedan 6.8L 8cyl Turbo 8A · RWD MPG 11 / 18Range 279 / 457 mi | 6.8L 8cyl Turbo 8A | RWD | 25.4 gal96 L | 11 / 18 | 279 / 457 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 Bentley Mulsanne 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 14 MPG, a full 25.4-gallon tank covers about 356 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 25.4 | 457 | 279 |
| 3/4 | 19.0 | 343 | 210 |
| 1/2 | 12.7 | 229 | 140 |
| 1/4 | 6.4 | 114 | 70 |
| 1/8 | 3.2 | 57 | 35 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 1,071 gallons, roughly 42 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
- 14 MPG
- Tailpipe CO2
- 652 g/mi
- EPA greenhouse score
- 1 of 10
- Gas guzzler tax
- Yes
- Source
- EPA ratings
What it costs to fill up a 2018 Bentley Mulsanne
$134.11 to fill the 25.4-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 |
|---|---|---|---|---|
| 25.4 gal | Premium | $5.28 | $134.11 | $100.58 |
By region, 25.4-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $125.22 |
| Midwest | $5.37 | $136.40 |
| Gulf CoastLowest | $4.57 | $116.08 |
| Rocky Mountain | $5.12 | $130.05 |
| West Coast | $6.08 | $154.43 |
| CaliforniaHighest | $6.36 | $161.54 |
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
- 25.4-gallon tank$134.11
- A year of driving (15,000 mi)$5,657
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
Mulsanne tank size in other years
The 2018 Mulsanne uses the same 25.4 gal tank as every Mulsanne since 2011.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2020 Mulsanne | 25.4 gal | 406 mi |
| 2019 Mulsanne | 25.4 gal | 406 mi |
| 2018 Mulsanne | 25.4 gal | 457 mi |
| 2017 Mulsanne | 25.4 gal | 457 mi |
| 2016 Mulsanne | 25.4 gal | 457 mi |
| 2015 Mulsanne | 25.4 gal | 457 mi |
| 2014 Mulsanne | 25.4 gal | 457 mi |
| 2013 Mulsanne | 25.4 gal | 457 mi |
2018 Bentley Mulsanne vs similar 2018 sedans
The Mulsanne has the largest tank of the two 2018 sedans compared here, 25.4 gallons against 21.8 for the Rolls-Royce Ghost Series II.
| 2018 model | Tank | Longest highway range |
|---|---|---|
| Bentley Mulsanne | 25.4 gal | 457 mi |
| Rolls-Royce Ghost Series II | 21.8 gal | 392 mi |
Other 2018 sedans of a similar size, one model per brand.
2018 Bentley Mulsanne fuel system recalls
None of the 2 recalls NHTSA lists for the 2018 Bentley Mulsanne involve the fuel system.
Frequently asked questions
What is the fuel tank capacity of the 2018 Bentley Mulsanne?
The 2018 Bentley Mulsanne holds 25.4 gallons (96 liters) on every trim we list.
How many gallons and liters does the 2018 Bentley Mulsanne gas tank hold?
The 2018 Bentley Mulsanne tank holds 96 liters, or 25.4 gallons in US gallons.
How far can a 2018 Bentley Mulsanne go on a full tank?
About 457 miles on the highway and 279 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 Bentley Mulsanne go on a quarter tank?
About 114 highway miles or 70 in town from the 25.4-gallon tank, which has roughly 6.4 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2018 Bentley Mulsanne take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2018 Bentley Mulsanne?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 25.4-gallon tank from empty costs $134.11. It ranges from $116.08 in the Gulf Coast to $161.54 in California.
How much does a full tank of gas weigh in a 2018 Bentley Mulsanne?
About 157 pounds for the 25.4-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2018 Bentley Mulsanne have a bigger gas tank than the Rolls-Royce Ghost Series II?
Yes. The 2018 Bentley Mulsanne holds up to 25.4 gallons; the 2018 Rolls-Royce Ghost Series II holds up to 21.8.
Has the 2018 Bentley Mulsanne had a fuel pump or fuel system recall?
No. None of the 2 recalls NHTSA lists for the 2018 Bentley Mulsanne 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 (Bentley 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.