What changes the tank sizeTap an option to filter the table
Engine
no difference
All 2 trims
MPG and range are city / highway.
Trim
Engine
Drive
Tank
MPG city / hwy
Range city / hwy
3.5T 4dr Sedan AWD3.5L 6cyl Turbo 8A · AWDMPG 18 / 26Range 347 / 502 mi
3.5L 6cyl Turbo 8A
AWD
19.3 gal73 L
18 / 26
347 / 502 mi
3.5T E-Supercharger 4dr Sedan AWD3.5L 6cyl Twincharger mild hybrid 8A · AWDMPG 17 / 24Range 328 / 463 mi
3.5L 6cyl Twincharger mild hybrid 8A
AWD
19.3 gal73 L
17 / 24
328 / 463 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 G90 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 21 MPG, a full 19.3-gallon tank covers about 405 miles.
Gauge
Gallons
Highway miles
City miles
Full
19.3
502
347
3/4
14.5
376
261
1/2
9.7
251
174
1/4
4.8
125
87
1/8
2.4
63
43
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 714 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.
Picked by body style and size: other 2023 sedans within about 5% of the G90's length and 15% of its curb weight, one model per brand.
2023 Genesis G90 fuel system recalls
NHTSA lists 2 fuel-system recalls for the 2023 Genesis G90, out of 6 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 G90?
The 2023 Genesis G90 holds 19.3 gallons (73 liters) on every trim we list.
How many gallons and liters does the 2023 Genesis G90 gas tank hold?
The 2023 Genesis G90 tank holds 73 liters, or 19.3 gallons in US gallons.
How far can a 2023 Genesis G90 go on a full tank?
About 463–502 miles on the highway and 328–347 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 G90 go on a quarter tank?
About 125 highway miles or 87 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 G90 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 G90?
At the US average of $5.28 a gallon for premium (EIA, week of October 26, 2026), filling the 19.3-gallon tank from empty costs $101.90. It ranges from $88.20 in the Gulf Coast to $122.75 in California.
How much does a full tank of gas weigh in a 2023 Genesis G90?
About 120 pounds for the 19.3-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2023 Genesis G90 have a bigger gas tank than the Audi S8?
No. The 2023 Audi S8 holds up to 21.7 gallons; the 2023 Genesis G90 holds up to 19.3.
Has the 2023 Genesis G90 had a fuel pump or fuel system recall?
Yes. NHTSA lists 2 fuel-system recalls for the 2023 Genesis G90: 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, cross-checked against a second spec database. Updated October 2026.
MPG and range: EPA ratings (fueleconomy.gov). Range is tank size times EPA MPG.