2018 Genesis G90

The 2018 Genesis G90 is a full-size luxury sedan for drivers seeking executive comfort, substantial performance, and a refined rear-wheel-drive or all-wheel-drive configuration. At Genesis of Peoria in Peoria, Arizona, shoppers can explore how the G90’s two trims differ in power, fuel economy, engine size, and drivetrain, then connect with a luxury dealership serving the Phoenix West Valley and Greater Phoenix metro area. This page brings together key specifications, trim pricing, ownership considerations, and ways to compare the G90 with other Genesis sedans. Genesis of Peoria also provides access to new, certified pre-owned, and pre-owned luxury vehicles, along with factory-authorized Genesis care at 17336 N 84th Ave.

Starting MSRP

$68,350

Horsepower

365–420 hp

EPA MPG

15–17 city / 23–24 hwy

Drivetrain

Rear Wheel Drive / All Wheel Drive

Fuel

Premium Unleaded (Recommended)

Body Style

Sedan

How the 2018 Genesis G90 Compares with the Genesis Lineup

Pricing, power, fuel economy, and drivetrain help define the right Genesis sedan for different driving priorities. The 2018 Genesis G90 starts at $68,350 MSRP, and MSRP excludes tax, title, registration and dealer fees.

The 2018 Genesis G80 starts at $44,250, compared with the G90’s $68,350 starting MSRP. The G80 suits shoppers focused on a lower entry price, while the G90 is positioned for those considering a larger flagship sedan.

The G80 offers 311–420 hp and EPA fuel economy of 16–18 city / 24–25 hwy, while the G90 spans 365 to 420 hp, 15 to 17 city MPG, and 23 to 24 highway MPG. The G80 also accepts Regular Unleaded / Premium Unleaded (Recommended), while the G90 recommends premium unleaded fuel, giving fuel-choice flexibility to G80 shoppers and a premium-fuel focus to G90 shoppers.

Specifications and Configuration

The 2018 Genesis G90 is a sedan with a V-layout engine, an automatic transmission, and 8 speeds. Across its two trims, engine output ranges from 365 to 420 hp and torque ranges from 376 to 383 lb-ft, with peak power at 6,000 rpm and peak torque from 1,300 to 5,000 rpm.

Engine size ranges from 3.3 to 5.0 L, cylinders range from 6 to 8, and displacement ranges from 3,342 to 5,038 cc. The G90 measures 204.9 inches long, 75.4 inches wide, and 58.9 inches high, with a 124.4-inch wheelbase. Curb weight ranges from 4,630 to 4,905 lbs, fuel capacity is 21.9 gallons, and cargo space behind the rear seats is 15.7 cu ft.

The Premium trim pairs 365 hp, a 3.3 L six-cylinder engine, 376 lb-ft of torque, 17 city MPG, 24 highway MPG, and rear-wheel drive. The Ultimate trim uses a 5.0 L eight-cylinder engine with 420 hp, 383 lb-ft of torque, 15 city MPG, 23 highway MPG, and all-wheel drive.

Buying This Vehicle in Peoria

Genesis of Peoria serves Peoria, Glendale, Sun City, Surprise, El Mirage, Scottsdale, and the broader Phoenix West Valley and Greater Phoenix metro area. The dealership is located at 17336 N 84th Ave, Peoria, AZ 85382, providing a regional destination for Genesis luxury vehicles and factory-authorized care.

Vehicle availability changes over time, and the store receives vehicles on a rolling basis. Use the search inventory link to review current options, or use the online trade-in process at value your trade. Genesis of Peoria also supports certified service, maintenance, and ownership needs.

What to Weigh Before Buying

Trim selection changes the G90’s engine, output, fuel economy, torque, and drivetrain. The Premium configuration emphasizes rear-wheel-drive operation and higher stated fuel economy, while the Ultimate configuration pairs its larger engine and greater horsepower with all-wheel drive.

Fuel planning matters because premium unleaded is the recommended fuel. The G90’s 21.9-gallon capacity and 15.7 cu ft of cargo space behind the rear seats support long-distance travel and everyday sedan use, while the 204.9-inch length and 124.4-inch wheelbase are worth considering when navigating parking spaces or urban streets.