S63 AMG 4MATIC 4dr Sedan AWD5.5L 8cyl Turbo 7A · AWDMPG 15 / 23Range 317 / 485 mi
5.5L 8cyl Turbo 7A
AWD
21.1 gal80 L
15 / 23
317 / 485 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 2014 Mercedes-Benz S-Class 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 21.1-gallon tank covers about 401 miles.
Gauge
Gallons
Highway miles
City miles
Full
21.1
549
338
3/4
15.8
411
253
1/2
10.6
274
169
1/4
5.3
137
84
1/8
2.6
69
42
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 789 gallons, roughly 37 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.
At 21.1 gallons, the S-Class's largest tank ranks third of the six 2014 sedans compared here. The Porsche Panamera carries the most (26.4 gal) and the Lincoln MKS the least (19.0 gal).
Other 2014 sedans of a similar size, one model per brand.
2014 Mercedes-Benz S-Class fuel system recalls
NHTSA lists 1 fuel-system recall for the 2014 Mercedes-Benz S-Class, out of 6 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
Mercedes-Benz USA LLC (Mercedes-Benz) is recalling certain model year 2014 S63 AMG sedans and 2015-2016 S63 AMG 4Matic sedans and coupes manufactured May 14, 2013, to September 18, 2015. In the affected vehicles, due to a software error within the engine control unit, the vehicle may stall when coasting to a stop, such as at a traffic light.
Risk and remedy
Risk: The vehicle stall may be interpreted by the driver to be a planned shut-down as part of the ECO-Start-function. However, the engine will not restart automatically after releasing the brake pedal, immobilizing the vehicle and increasing the risk of a crash.
Remedy: Mercedes-Benz will notify owners, and dealers will update the engine control unit software, free of charge. The recall BEGAN ON DECEMBER 2, 2015. Owners may contact Mercedes-Benz customer service at 1-800-367-6372. Mercedes-Benz's number for this recall is 2015100003.
What is the fuel tank capacity of the 2014 Mercedes-Benz S-Class?
The 2014 Mercedes-Benz S-Class holds 21.1 gallons (80 liters) on every trim we list.
How many gallons and liters does the 2014 Mercedes-Benz S-Class gas tank hold?
The 2014 Mercedes-Benz S-Class tank holds 80 liters, or 21.1 gallons in US gallons.
Does AWD change the 2014 Mercedes-Benz S-Class gas tank?
No. AWD and RWD versions of the 2014 Mercedes-Benz S-Class use the same 21.1 gal tank.
How far can a 2014 Mercedes-Benz S-Class go on a full tank?
About 485–549 miles on the highway and 317–359 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 2014 Mercedes-Benz S-Class go on a quarter tank?
About 137 highway miles or 84 in town from the 21.1-gallon tank, which has roughly 5.3 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2014 Mercedes-Benz S-Class take?
Premium unleaded (required). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2014 Mercedes-Benz S-Class?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 21.1-gallon tank from empty costs $111.41. It ranges from $96.43 in the Gulf Coast to $134.20 in California.
How much does a full tank of gas weigh in a 2014 Mercedes-Benz S-Class?
About 131 pounds for the 21.1-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2014 Mercedes-Benz S-Class have a bigger gas tank than the BMW ALPINA B7?
No, they match: both top out at 21.1 gallons in 2014.
Has the 2014 Mercedes-Benz S-Class had a fuel pump or fuel system recall?
Yes. NHTSA lists 1 fuel-system recall for the 2014 Mercedes-Benz S-Class: 15V652000 (delivery). Check your VIN at nhtsa.gov/recalls to see if your car is affected.
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).