The 2023 Genesis G80 has a fuel tank capacity of 17.2 to 19.3 gallons (65–73 liters), depending on the trim. The most common size is 17.2 gallons, used on 2 trims.
A full tank is good for roughly 483–550 highway miles or 309–378 miles around town, going by the EPA ratings.
020 gal40 gal
19.3 gal · Bigger than 62% of 2023 models we list.
2.5T 4dr Sedan AWD2.5L 4cyl Turbo 8A · AWDMPG 22 / 30Range 378 / 516 mi
2.5L 4cyl Turbo 8A
AWD
17.2 gal65 L
22 / 30
378 / 516 mi
3.5T Sport 4dr Sedan AWD3.5L 6cyl Turbo 8A · AWDMPG 16 / 25Range 309 / 483 mi
3.5L 6cyl Turbo 8A
AWD
19.3 gal73 L
16 / 25
309 / 483 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 2023 Genesis G80 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 19.3-gallon tank covers about 367 miles.
Gauge
Gallons
Highway miles
City miles
Full
19.3
483
309
3/4
14.5
362
232
1/2
9.7
241
154
1/4
4.8
121
77
1/8
2.4
60
39
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 789 gallons, roughly 41 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 19.3 gallons, the G80's largest tank ranks third of the four 2023 sedans compared here. The Porsche Panamera carries the most (23.7 gal) and the Audi A7 the least (19.3 gal).
Other 2023 sedans of a similar size, one model per brand.
2023 Genesis G80 fuel system recalls
NHTSA lists 2 fuel-system recalls for the 2023 Genesis G80, out of 5 recalls in total. A recall applies only to the vehicles named in it, so check your VIN.
Delivery · Hoses, lines/piping, and fittingsApr 10, 2026 · NHTSA 26V229000 · Hyundai Motor America · 94,760 vehicles
Hyundai Motor America (Genesis) is recalling certain Genesis 2022-2026 GV70, 2023-2025 G90, 2021-2025 G80, and GV80 vehicles. Fuel may leak at the pipe connection between the fuel pipe and fuel rail.
Risk and remedy
Risk: A fuel leak increases the risk of a fire.
Remedy: Dealers will inspect and tighten, or replace the fuel pipe as necessary, free of charge. Owner notification letters were mailed beginning July 20, 2026. Owners may contact Genesis customer service at 844-340-9741. Genesis' number for this recall is 033G. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov beginning April 11, 2026.
Delivery · Fuel pumpApr 19, 2024 · NHTSA 24V282000 · Hyundai Motor America · 31,440 vehicles
Hyundai Motor America (Hyundai) is recalling certain 2022-2023 Genesis GV70, GV80, G80, and G90 vehicles. The fuel pump may fail, which can result in a loss of drive power.
Risk and remedy
Risk: A loss of drive power can increase the risk of a crash.
Remedy: Dealers will inspect and replace the fuel pump assembly, free of charge. Owner notification letters were mailed June 7, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 022G. This recall is an expansion of recall number 23V-630.
What is the fuel tank capacity of the 2023 Genesis G80?
The 2023 Genesis G80 holds between 17.2 and 19.3 gallons, depending on the trim. 17.2 gallons is the usual size; the 19.3-gallon tank comes on the 3.5T Sport 4dr Sedan AWD (3.5L 6cyl Turbo 8A).
How many gallons and liters does the 2023 Genesis G80 gas tank hold?
The 2023 Genesis G80 tank holds 65–73 liters, or 17.2–19.3 gallons in US gallons.
Which 2023 Genesis G80 has the biggest gas tank?
The 19.3-gallon tank is on the 3.5T Sport 4dr Sedan AWD. The smallest tank, 17.2 gallons, is on the 2.5T 4dr Sedan.
Does AWD change the 2023 Genesis G80 gas tank?
Yes. AWD: 17.2–19.3 gal; RWD: 17.2 gal.
How far can a 2023 Genesis G80 go on a full tank?
About 483–550 miles on the highway and 309–378 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 2023 Genesis G80 go on a quarter tank?
About 121 highway miles or 77 in town from the 19.3-gallon tank, which has roughly 4.8 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2023 Genesis G80 take?
Premium unleaded (recommended). The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2023 Genesis G80?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 17.2-gallon tank from empty costs $90.82. It ranges from $78.60 in the Gulf Coast to $109.39 in California.
How much does a full tank of gas weigh in a 2023 Genesis G80?
About 120 pounds for the 19.3-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2023 Genesis G80 have a bigger gas tank than the Audi A7?
No, they match: both top out at 19.3 gallons in 2023.
Has the 2023 Genesis G80 had a fuel pump or fuel system recall?
Yes. NHTSA lists 2 fuel-system recalls for the 2023 Genesis G80: 26V229000 (delivery · hoses, lines/piping, and fittings); 24V282000 (delivery · fuel pump). 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).