2015 BMW ALPINA B6 Gran Coupe Gas Tank Size & Fuel Capacity
Fuel tank capacity
18.5gal · 70 L
The 2015 BMW ALPINA B6 Gran Coupe has a fuel tank capacity of 18.5 gallons (70 liters).
A full tank is good for roughly 444 highway miles or 296 miles around town, going by the EPA ratings.
18.5 gal · Smaller than 54% of 2015 models we list.
2015 BMW ALPINA B6 Gran Coupe fuel tank capacity by trim
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| xDrive 4dr Sedan AWD 4.4L 8cyl Turbo 8A · AWD MPG 16 / 24Range 296 / 444 mi | 4.4L 8cyl Turbo 8A | AWD | 18.5 gal70 L | 16 / 24 | 296 / 444 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 BMW ALPINA B6 Gran Coupe 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 19 MPG, a full 18.5-gallon tank covers about 352 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 18.5 | 444 | 296 |
| 3/4 | 13.9 | 333 | 222 |
| 1/2 | 9.3 | 222 | 148 |
| 1/4 | 4.6 | 111 | 74 |
| 1/8 | 2.3 | 56 | 37 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 789 gallons, roughly 43 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
- 19 MPG
- Tailpipe CO2
- 477 g/mi
- EPA greenhouse score
- 4 of 10
- Source
- EPA ratings
What it costs to fill up a 2015 BMW ALPINA B6 Gran Coupe
$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)$4,168
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
ALPINA B6 Gran Coupe tank size in other years
2015 is the first ALPINA B6 Gran Coupe model year we list.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2019 ALPINA B6 Gran Coupe | 18.5 gal | 463 mi |
| 2018 ALPINA B6 Gran Coupe | 18.5 gal | 463 mi |
| 2017 ALPINA B6 Gran Coupe | 18.5 gal | 444 mi |
| 2016 ALPINA B6 Gran Coupe | 18.5 gal | 444 mi |
| 2015 ALPINA B6 Gran Coupe | 18.5 gal | 444 mi |
2015 BMW ALPINA B6 Gran Coupe vs similar 2015 sedans
The ALPINA B6 Gran Coupe has the smallest tank of the seven 2015 sedans compared here: 18.5 gallons, against 26.4 for the Porsche Panamera.
| 2015 model | Tank | Longest highway range |
|---|---|---|
| Porsche Panamera | 21.1–26.4 gal | 713 mi |
| Lexus LS 460 | 22.2 gal | 533 mi |
| Mercedes-Benz S-Class | 20.6–21.9 gal | 618 mi |
| Audi S8 | 21.7 gal | 586 mi |
| INFINITI Q70 | 17.8–20.0 gal | 605 mi |
| Lincoln MKS | 19.0 gal | 532 mi |
| BMW ALPINA B6 Gran Coupe | 18.5 gal | 444 mi |
Other 2015 sedans of a similar size, one model per brand.
Frequently asked questions
What is the fuel tank capacity of the 2015 BMW ALPINA B6 Gran Coupe?
The 2015 BMW ALPINA B6 Gran Coupe holds 18.5 gallons (70 liters).
How many gallons and liters does the 2015 BMW ALPINA B6 Gran Coupe gas tank hold?
The 2015 BMW ALPINA B6 Gran Coupe tank holds 70 liters, or 18.5 gallons in US gallons.
How far can a 2015 BMW ALPINA B6 Gran Coupe go on a full tank?
About 444 miles on the highway and 296 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 BMW ALPINA B6 Gran Coupe go on a quarter tank?
About 111 highway miles or 74 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 2015 BMW ALPINA B6 Gran Coupe take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2015 BMW ALPINA B6 Gran Coupe?
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 2015 BMW ALPINA B6 Gran Coupe?
About 115 pounds for the 18.5-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2015 BMW ALPINA B6 Gran Coupe have a bigger gas tank than the Lexus LS 460?
No. The 2015 Lexus LS 460 holds up to 22.2 gallons; the 2015 BMW ALPINA B6 Gran Coupe holds up to 18.5.
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).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.