2026 BMW 4 Series Gas Tank Size & Fuel Capacity
Fuel tank capacity
15.5–15.6gal · 59–59 L
The 2026 BMW 4 Series has a fuel tank capacity of 15.5 to 15.6 gallons (59–59 liters), depending on the trim. The most common size is 15.6 gallons, used on 4 trims.
A full tank is good for roughly 499–558 highway miles or 374–434 miles around town, going by the EPA ratings.
15.6 gal · Smaller than 71% of 2026 models we list.
Listed separately: 2026 BMW 4 Series Gran Coupe (15.6 gal).
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2026 BMW 4 Series fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
- no difference
- Engine
- no difference
All 8 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| 430i 2dr Coupe 2.0L 4cyl Turbo mild hybrid 8A · RWD MPG 28 / 36Range 434 / 558 mi | 2.0L 4cyl Turbo mild hybrid 8A | RWD | 15.5 gal59 L | 28 / 36 | 434 / 558 mi | |
| 430i xDrive 2dr Coupe AWD 2.0L 4cyl Turbo mild hybrid 8A · AWD MPG 27 / 34Range 419 / 527 mi | 2.0L 4cyl Turbo mild hybrid 8A | AWD | 15.5 gal59 L | 27 / 34 | 419 / 527 mi | |
| M440i 2dr Coupe 3.0L 6cyl Turbo mild hybrid 8A · RWD MPG 27 / 34Range 419 / 527 mi | 3.0L 6cyl Turbo mild hybrid 8A | RWD | 15.5 gal59 L | 27 / 34 | 419 / 527 mi | |
| M440i xDrive 2dr Coupe AWD 3.0L 6cyl Turbo mild hybrid 8A · AWD MPG 26 / 33Range 403 / 512 mi | 3.0L 6cyl Turbo mild hybrid 8A | AWD | 15.5 gal59 L | 26 / 33 | 403 / 512 mi | |
| 430i 2dr Convertible 2.0L 4cyl Turbo mild hybrid 8A · RWD MPG 27 / 35Range 421 / 546 mi | 2.0L 4cyl Turbo mild hybrid 8A | RWD | 15.6 gal59 L | 27 / 35 | 421 / 546 mi | |
| 430i xDrive 2dr Convertible AWD 2.0L 4cyl Turbo mild hybrid 8A · AWD MPG 24 / 33Range 374 / 515 mi | 2.0L 4cyl Turbo mild hybrid 8A | AWD | 15.6 gal59 L | 24 / 33 | 374 / 515 mi | |
| M440i 2dr Convertible 3.0L 6cyl Turbo mild hybrid 8A · RWD MPG 27 / 33Range 421 / 515 mi | 3.0L 6cyl Turbo mild hybrid 8A | RWD | 15.6 gal59 L | 27 / 33 | 421 / 515 mi | |
| M440i xDrive 2dr Convertible AWD 3.0L 6cyl Turbo mild hybrid 8A · AWD MPG 25 / 32Range 390 / 499 mi | 3.0L 6cyl Turbo mild hybrid 8A | AWD | 15.6 gal59 L | 25 / 32 | 390 / 499 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 2026 BMW 4 Series 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 30 MPG, a full 15.5-gallon tank covers about 465 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 15.5 | 527 | 419 |
| 3/4 | 11.6 | 395 | 314 |
| 1/2 | 7.8 | 264 | 209 |
| 1/4 | 3.9 | 132 | 105 |
| 1/8 | 1.9 | 66 | 52 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 500 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.
What it costs to fill up a 2026 BMW 4 Series
$82.37 to fill the 15.6-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 |
|---|---|---|---|---|
| 15.5 gal | Premium | $5.28 | $81.84 | $61.38 |
| 15.6 gal | Premium | $5.28 | $82.37 | $61.78 |
By region, 15.6-gallon tank
| Region | Premium / gal | Fill from empty |
|---|---|---|
| East Coast | $4.93 | $76.91 |
| Midwest | $5.37 | $83.77 |
| Gulf CoastLowest | $4.57 | $71.29 |
| Rocky Mountain | $5.12 | $79.87 |
| West Coast | $6.08 | $94.85 |
| CaliforniaHighest | $6.36 | $99.22 |
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
- 15.5-gallon tank$81.84
- 15.6-gallon tank$82.37
- A year of driving (15,000 mi)$2,640
Starts at the US average for premium; type in what your station charges. For other tank sizes, use the fill-up calculator.
4 Series tank size in other years
The 2026 4 Series uses the same 15.5–15.6 gal tank sizes as the 2025 model.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2027 4 Series | 15.6 gal | 562 mi |
| 2026 4 Series | 15.5–15.6 gal | 558 mi |
| 2025 4 Series | 15.5–15.6 gal | 558 mi |
| 2024 4 Series | 15.6 gal | 530 mi |
| 2023 4 Series | 15.6 gal | 530 mi |
| 2022 4 Series | 15.6 gal | 530 mi |
| 2021 4 Series | 15.6 gal | 530 mi |
2026 BMW 4 Series vs similar 2026 coupes
The 4 Series has the smallest tank of the three 2026 coupes compared here: 15.6 gallons, against 21.1 for the Mercedes-Benz AMG® GT.
| 2026 model | Tank | Longest highway range |
|---|---|---|
| Mercedes-Benz AMG® GT | 18.5–21.1 gal | 506 mi |
| Porsche 911 | 16.6 gal | 415 mi |
| BMW 4 Series | 15.5–15.6 gal | 558 mi |
Other 2026 coupes of a similar size, one model per brand.
2026 BMW 4 Series fuel system recalls
None of the 1 recall NHTSA lists for the 2026 BMW 4 Series involve the fuel system.
Frequently asked questions
What is the fuel tank capacity of the 2026 BMW 4 Series?
The 2026 BMW 4 Series holds between 15.5 and 15.6 gallons, depending on the trim. 15.6 gallons is the usual size; the smaller 15.5-gallon tank is on the 430i 2dr Coupe.
How many gallons and liters does the 2026 BMW 4 Series gas tank hold?
The 2026 BMW 4 Series tank holds 59–59 liters, or 15.5–15.6 gallons in US gallons.
Which 2026 BMW 4 Series has the biggest gas tank?
The 15.6-gallon tank is on the 430i 2dr Convertible, 430i xDrive 2dr Convertible AWD, M440i 2dr Convertible and 1 other trim. The smallest tank, 15.5 gallons, is on the 430i 2dr Coupe.
Does AWD change the 2026 BMW 4 Series gas tank?
No. RWD and AWD versions of the 2026 BMW 4 Series use the same 15.5–15.6 gal tank.
How far can a 2026 BMW 4 Series go on a full tank?
About 499–558 miles on the highway and 374–434 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 2026 BMW 4 Series go on a quarter tank?
About 132 highway miles or 105 in town from the 15.5-gallon tank, which has roughly 3.9 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2026 BMW 4 Series take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2026 BMW 4 Series?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 15.6-gallon tank from empty costs $82.37. It ranges from $71.29 in the Gulf Coast to $99.22 in California.
How much does a full tank of gas weigh in a 2026 BMW 4 Series?
About 97 pounds for the 15.6-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2026 BMW 4 Series have a bigger gas tank than the Mercedes-Benz AMG® GT?
No. The 2026 Mercedes-Benz AMG® GT holds up to 21.1 gallons; the 2026 BMW 4 Series holds up to 15.6.
Has the 2026 BMW 4 Series had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 2026 BMW 4 Series 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. 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 (BMW 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.