The 2027 INFINITI QX65 gets EPA-estimated fuel economy of 20 mpg city, 26 mpg highway, and 22 mpg combined. Every trim, from LUXE to SPORT to AUTOGRAPH, uses the same 268-hp 2.0L VC-Turbo four-cylinder, nine-speed automatic, and standard all-wheel drive, so the QX65 MPG rating stays the same whichever one you choose.
Those numbers put the QX65 in the middle of the luxury coupe-SUV pack: slightly behind the BMW X6 xDrive40i, and ahead of the Mercedes-Benz GLE 450 Coupe and Genesis GV80 Coupe. If you're weighing fuel costs before you shop the 2027 INFINITI QX65 for sale in Mesa, the details below will help you set realistic expectations.
This guide explains what each EPA figure means, how far a tank of premium fuel will take you, and why Arizona driving, with its summer heat, fast freeways, and mountain climbs, can move your results up or down. We also compare the QX65 with the QX60, the QX80, and its closest competitors.
We're Coulter INFINITI, the East Valley's INFINITI dealership in Mesa. Everything below is based on INFINITI's published specifications and on the fuel economy questions local drivers ask us most often when they're shopping for a new luxury SUV.
Key Takeaways
- The 2027 QX65 is EPA-rated at 20 mpg city, 26 mpg highway, and 22 mpg combined across all three trims.
- Premium unleaded fuel is required, and the 18.49-gallon tank gives an estimated range of roughly 400 miles in mixed driving.
- A 268-hp 2.0L VC-Turbo engine, a nine-speed automatic, and standard Intelligent All-Wheel Drive power every QX65.
- The three-row QX60 is rated 2 mpg better combined (24 mpg), while the full-size QX80 is rated 17 to 18 mpg combined.
- Among coupe-styled rivals, the QX65 trails the BMW X6 xDrive40i by 1 mpg combined but beats the Mercedes-Benz GLE 450 Coupe and Genesis GV80 Coupe.
- There is no QX65 hybrid, so smooth driving, correct tire pressure, and Eco mode are the best ways to raise your real-world MPG.
QX65 MPG: Official 2027 EPA Fuel Economy Ratings
The EPA rates every 2027 INFINITI QX65 at 20 mpg city, 26 mpg highway, and 22 mpg combined. Because INFINITI builds the QX65 with a single powertrain and standard all-wheel drive, there's one fuel economy rating for the entire lineup. That makes comparison shopping simpler than it is for most luxury SUVs.
These figures come from standardized laboratory tests that let you compare vehicles on equal terms. They aren't a promise of what you'll see on your own commute, but they are the most reliable starting point for estimating fuel costs and range.
City, Highway, and Combined MPG Explained
Each EPA number reflects a different driving pattern. The city rating simulates stop-and-go traffic with frequent idling and lower average speeds. The highway rating reflects steadier cruising with fewer stops. The combined figure blends the two, weighting city driving at 55% and highway driving at 45%.
For most East Valley drivers, the 22 mpg combined rating is the most useful number for budgeting. If your week is mostly freeway miles on the US-60 or Loop 202, expect results closer to the highway figure. If you spend more time on surface streets, the city figure is the better guide.
| EPA Rating | 2027 QX65 MPG | What It Measures | Typical East Valley Example |
|---|---|---|---|
| City | 20 mpg | Stop-and-go driving, idling, and lower speeds | Errands along Power Road or Southern Avenue |
| Highway | 26 mpg | Steady cruising with few stops | A weekday commute on the US-60 or Loop 202 |
| Combined | 22 mpg | A 55% city and 45% highway blend | A normal week of commuting, errands, and weekend trips |
Does QX65 MPG Change by Trim Level?
No. The LUXE, SPORT, and AUTOGRAPH trims all carry the same 20/26/22 mpg rating because they share the same engine, transmission, and all-wheel-drive system. Your trim choice changes features, materials, and styling, not the official fuel economy figure.
The one hardware difference worth knowing about is wheels and tires. LUXE and SPORT models ride on 20-inch wheels with 255/50R20 all-season tires, while the AUTOGRAPH uses 21-inch wheels with 265/45R21 tires. Larger, wider tires can nudge real-world economy slightly, but not enough to change the EPA rating.
Standard All-Wheel Drive and What It Means for MPG
Every QX65 comes with Intelligent All-Wheel Drive, and there's no front-wheel-drive version. All-wheel drive adds weight and driveline hardware, which usually costs a little efficiency. You can see that trade-off in the QX60, where the FWD model is rated 28 mpg highway and the AWD model 27 mpg.
For many Arizona buyers, the extra traction is worth it during monsoon downpours, on dirt roads to trailheads, and on snowy weekends up north. The QX65 includes that capability as standard equipment.
Here are the QX65 specifications that matter most for fuel economy:
- Engine: 2.0L VC-Turbo four-cylinder
- Output: 268 hp at 5,600 rpm and 286 lb-ft of torque at 4,400 rpm
- Transmission: Nine-speed automatic with paddle shifters
- Drivetrain: Intelligent All-Wheel Drive, standard on every trim
- Fuel: Premium unleaded, required
- Fuel tank: 18.49 gallons
How Far Can a QX65 Go on a Tank of Gas?
Fuel economy tells you how efficient a vehicle is. Range tells you how often you'll stop at the pump. The QX65's 18.49-gallon tank gives it enough cruising range for daily commuting and long Arizona road trips alike.
Fuel Tank Size and Estimated Driving Range
Multiplying the tank capacity by each EPA rating gives a theoretical range of about 370 miles in city driving, 407 miles combined, and 481 miles on the highway. Those are empty-tank figures, so real trip planning should leave a comfortable reserve.
In practice, most drivers can plan on 350 to 400 miles between fill-ups in mixed driving. That covers a round trip from Mesa to Sedona or Flagstaff without refueling, assuming moderate speeds and a light load.
Premium Fuel: What the QX65 Requires
According to INFINITI's official QX65 performance specifications, the 2027 QX65 requires premium unleaded gasoline to perform at peak operating efficiency. In Arizona, premium is usually sold as 91 octane.
The VC-Turbo engine constantly adjusts its compression ratio and ignition timing, and higher-octane fuel lets it use the high-compression settings that deliver the best economy. Lower-octane fuel can cost you power and efficiency, so the savings at the pump may not be real savings.
Premium does cost more per gallon than regular, so factor that difference into your budget when you compare the QX65 with vehicles that run on regular fuel.
Estimating Your Annual QX65 Fuel Cost
Your yearly fuel spend depends on how far you drive and what premium costs when you fill up. The table below uses the 22 mpg combined rating and two example premium prices to show a realistic range. Plug in current local prices for a more precise estimate.
| Annual Miles | Approx. Gallons Used (22 MPG) | Example Cost at $4.00/Gallon | Example Cost at $5.00/Gallon |
|---|---|---|---|
| 10,000 miles | 455 gallons | $1,818 | $2,273 |
| 12,000 miles | 545 gallons | $2,182 | $2,727 |
| 15,000 miles | 682 gallons | $2,727 | $3,409 |
Highway-heavy drivers will land toward the lower end of these estimates. Short trips around town in the summer heat will push costs higher.
The Powertrain Behind the QX65's Fuel Economy
The QX65's efficiency starts with an engine design that's rare in the auto industry. INFINITI's VC-Turbo changes its own internal geometry as you drive, aiming to deliver the punch of a larger engine with the thrift of a smaller one.
2.0L VC-Turbo: Variable Compression Explained
Most engines have a fixed compression ratio, which is always a compromise between power and efficiency. The VC-Turbo uses a multi-link system to change how far each piston travels, varying compression between 8:1 and 14:1.
When you're cruising, the engine moves toward high compression, which extracts more energy from every drop of fuel. When you accelerate hard, it shifts toward low compression so the turbocharger can add boost safely. The change happens automatically, and you won't feel it from the driver's seat.
Horsepower and Torque
The engine produces 268 horsepower at 5,600 rpm and 286 lb-ft of torque at 4,400 rpm. That's strong output for a four-cylinder, and it lets the QX65 merge and pass confidently without the fuel penalty of a larger V6.
Why Your Right Foot Matters
The VC-Turbo is at its most economical under light throttle. Gentle acceleration keeps it in that range, while frequent hard launches call on boost and lower compression more often. That's the fastest way to fall short of the EPA rating.
Nine-Speed Automatic Transmission
The QX65 pairs its engine with a nine-speed automatic. More gears means smaller steps between ratios, so the engine can stay near its most efficient speed whether you're pulling away from a light or cruising at 65 mph.
Tall upper gears keep engine rpm low on the freeway, which helps the QX65 earn its 26 mpg highway rating. Paddle shifters let you hold a gear when you want more control, such as on long mountain descents.
This is a clear change from INFINITI's smaller QX55, which used a continuously variable transmission (CVT). The nine-speed gives the QX65 a more traditional feel under acceleration while supporting a towing rating of up to 6,000 pounds.
Eco Mode, Active Grille Shutters, and Other Efficiency Helpers
The QX65 offers six drive modes: Standard, Sport, Eco, Tow, Snow, and Off Road. Eco mode softens throttle response and adjusts transmission behavior to encourage smoother driving, which helps most in stop-and-go traffic.
INFINITI also fits the QX65 with active front grille shutters. They close at cruising speeds to reduce aerodynamic drag and open when the engine needs more cooling air, a small detail that pays off on long freeway drives.
Real-World QX65 MPG on Arizona Roads
EPA ratings are a benchmark, and your results will depend on where and how you drive. Arizona adds a few variables that drivers in milder climates face less often: extreme summer heat, fast freeway speeds, and big elevation changes.
Early road tests suggest the QX65 can match its label in normal use. In a first-drive review by Capital One Auto Navigator, the trip computer showed 22.5 mpg over a mix of freeway, city, and winding back-road driving, slightly above the 22 mpg combined estimate.
Freeway Commutes on the US-60 and Loop 202
Steady freeway driving is where the QX65 does its best work. A commute on the US-60 Superstition Freeway or the Loop 202 at a consistent speed, with the nine-speed in its top gears, is the closest real-world match to the EPA highway test.
Speed is the biggest variable. Aerodynamic drag climbs quickly as you go faster, so holding 65 to 70 mph instead of 80 mph makes a noticeable difference over a week of commuting.
Stop-and-Go Driving Around Mesa and Phoenix
Rush-hour backups, school pickup lines, and signal-heavy surface streets pull economy toward the 20 mpg city rating. Every stop means accelerating a heavy vehicle from rest, which uses more fuel than cruising.
Eco mode and gentle starts help most here. Looking ahead and coasting toward red lights, instead of braking late, also saves fuel you've already paid for.
Summer Heat and Air Conditioning
Valley summers regularly top 110°F, and the A/C works hard from May through September. FuelEconomy.gov's hot-weather guidance notes that running the air conditioner in hot weather can cut a conventional vehicle's fuel economy by more than 25%, particularly on short trips.
Parking in the shade, using a windshield sunshade, and venting hot air with the windows down for the first minute all reduce the load on the A/C. On longer drives, the effect fades once the cabin cools.
Climbing to the High Country
Driving from Mesa, at roughly 1,200 feet, to Flagstaff, at nearly 7,000 feet, means a long climb that lowers fuel economy on the way up. You'll recover some of it on the way home as gravity helps on the descent.
Turbocharged engines like the VC-Turbo cope with thin mountain air better than naturally aspirated engines, because the turbo makes up for lower air density. That helps the QX65 keep its power on the I-17 and SR-87 grades.
Towing with the QX65
The QX65 can tow up to 6,000 pounds when properly equipped, and it includes a Tow drive mode and Trailer Sway Control. Pulling a boat to Saguaro Lake or a small camper to the White Mountains will lower fuel economy considerably, since the engine is moving far more weight and pushing a trailer through the air.
Expect shorter distances between fill-ups when towing, and keep an eye on the fuel gauge on long grades where stations are spread out.
| Arizona Drive from Mesa | Approx. One-Way Distance | Est. Fuel at 26 MPG Highway | What to Expect |
|---|---|---|---|
| Payson via SR-87 | 80 miles | 3.1 gallons | A steady climb up the Beeline Highway |
| Tucson via I-10 | 105 miles | 4.0 gallons | Flat freeway miles, close to the EPA highway test |
| Sedona via I-17 | 140 miles | 5.4 gallons | A long climb north, then slower red-rock roads |
| Flagstaff via I-17 | 155 miles | 6.0 gallons | Nearly 5,700 feet of elevation gain, so MPG dips on the way up |
| Grand Canyon South Rim | 235 miles | 9.0 gallons | Comfortably within a single tank |
| San Diego via I-8 | 370 miles | 14.2 gallons | Near the limit of one tank, so plan a fuel stop |
Distances are approximate, and the fuel estimates assume the EPA highway rating. Climbs, speed, A/C use, and cargo will all change your actual results.
If you'd like to feel how the QX65 drives before you decide, our Mesa team can set up a test drive that includes both freeway and surface-street miles.
Towing, long climbs, and summer heat all shape the real-world MPG a 2027 INFINITI QX65 delivers on Arizona roads.
QX65 MPG vs. Other INFINITI SUVs
Shopping the INFINITI lineup? The QX65 sits between the three-row QX60 and the full-size QX80, and its fuel economy lands close to the QX60, which shares its engine and transmission.
QX65 vs. QX60 Fuel Economy
The 2027 INFINITI QX60 three-row SUV is rated 22 mpg city, 27 to 28 mpg highway, and 24 mpg combined, depending on drivetrain. That's 2 mpg better than the QX65 combined, even though the QX60 carries a third row of seats.
Both SUVs use the 2.0L VC-Turbo engine and nine-speed automatic. INFINITI hasn't published a breakdown of the gap, but differences in drivetrain, weight, tire size, and calibration usually account for results like this. The QX60 is also offered with front-wheel drive, while the QX65 is all-wheel drive only.
If maximum fuel economy and third-row seating are your priorities, the QX60 has the edge. If you prefer a sleeker two-row design, the QX65 asks you to give up only about 2 mpg.
QX65 vs. QX80 Fuel Economy
The full-size QX80 uses a 3.5L twin-turbo V6 and is rated 16 mpg city, 19 to 20 mpg highway, and 17 to 18 mpg combined. The QX65 delivers roughly 4 to 5 mpg more in combined driving, which can save a typical driver hundreds of dollars in fuel each year.
The trade-off is size and capability. The QX80 seats up to eight and tows up to 8,500 pounds, while the QX65 is a five-passenger SUV with a 6,000-pound tow rating.
How the QX65 Compares with the QX55
INFINITI's earlier coupe-styled SUV, the QX55, was rated 22 mpg city, 28 mpg highway, and 25 mpg combined for the 2025 model year. It used a version of the VC-Turbo engine with a CVT in a smaller, lighter package.
The QX65 gives up about 3 mpg combined in exchange for a larger midsize body, more passenger and cargo space, a nine-speed automatic, and a much higher tow rating. For a look back at how earlier models compared, see our previous roundup of the most fuel-efficient INFINITI models.
| INFINITI Model | Engine and Transmission | Drivetrain | EPA MPG (City / Hwy / Combined) | Seating |
|---|---|---|---|---|
| 2027 QX65 | 2.0L VC-Turbo I-4, 9-speed automatic | AWD | 20 / 26 / 22 | 2 rows, 5 seats |
| 2027 QX60 | 2.0L VC-Turbo I-4, 9-speed automatic | FWD | 22 / 28 / 24 | 3 rows |
| 2027 QX60 | 2.0L VC-Turbo I-4, 9-speed automatic | AWD | 22 / 27 / 24 | 3 rows |
| 2027 QX80 | 3.5L twin-turbo V6, 9-speed automatic | 2WD | 16 / 20 / 18 | 3 rows |
| 2027 QX80 | 3.5L twin-turbo V6, 9-speed automatic | 4WD | 16 / 19 / 17 | 3 rows |
| 2025 QX55 | 2.0L VC-Turbo I-4, CVT | AWD | 22 / 28 / 25 | 2 rows, 5 seats |
QX65 MPG vs. Rival Luxury SUVs
Most shoppers who consider the QX65 also look at other stylish midsize luxury SUVs. Here's how its fuel economy compares with the gas-powered versions of its closest competitors.
Coupe-Styled Luxury SUVs
BMW X6 xDrive40i
The 2026 BMW X6 xDrive40i is rated 22 mpg city, 26 mpg highway, and 23 mpg combined from a 3.0L turbocharged six-cylinder with mild-hybrid assist. That's 1 mpg better than the QX65 combined, with the same highway rating.
The X6 carries a much higher starting price, though, so the QX65 often makes more financial sense even after you account for a small difference in fuel use.
Mercedes-Benz GLE 450 4MATIC Coupe
The 2026 GLE 450 4MATIC Coupe is rated 19 mpg city, 25 mpg highway, and 21 mpg combined. The QX65 beats it by 1 mpg in every category and costs considerably less to buy.
Genesis GV80 Coupe
The 2026 Genesis GV80 Coupe comes only with a 3.5L twin-turbo V6 and is rated 16 to 17 mpg city, 22 mpg highway, and 19 mpg combined. The QX65's four-cylinder VC-Turbo gives it a 3 mpg advantage in combined driving.
Traditional Two-Row Luxury SUVs
Conventional two-row models such as the 2026 Lexus RX 350 AWD and the 2026 Lincoln Nautilus are each rated 24 mpg combined, 2 mpg better than the QX65. Both use turbocharged four-cylinder engines and are rated to tow less than the QX65.
If fuel economy is your single biggest priority, hybrid versions of some rivals, like the Lexus RX 350h at 36 mpg combined, will beat any gas-only SUV. The QX65 is built for drivers who want strong turbocharged performance, a coupe-inspired design, and a 6,000-pound tow rating, with fuel economy that stays competitive among gas-powered models.
| Vehicle | Engine | EPA MPG (City / Hwy / Combined) | Compared with QX65 (Combined) |
|---|---|---|---|
| 2027 INFINITI QX65 | 2.0L VC-Turbo I-4 | 20 / 26 / 22 | Baseline |
| 2026 BMW X6 xDrive40i | 3.0L turbo I-6, mild hybrid | 22 / 26 / 23 | 1 mpg better |
| 2026 Mercedes-Benz GLE 450 4MATIC Coupe | 3.0L turbo I-6, mild hybrid | 19 / 25 / 21 | 1 mpg lower |
| 2026 Genesis GV80 Coupe 3.5T | 3.5L twin-turbo V6 | 16-17 / 22 / 19 | 3 mpg lower |
| 2026 Lexus RX 350 AWD | 2.4L turbo I-4 | 21 / 28 / 24 | 2 mpg better |
| 2026 Lincoln Nautilus AWD | 2.0L turbo I-4 | 21 / 29 / 24 | 2 mpg better |
Rival figures are EPA estimates for the 2026 model year. Ratings can change with each new model year, so confirm current numbers before you buy.
Our take: the QX65 won't win a fuel economy contest outright, but it posts competitive numbers for a turbocharged luxury SUV and undercuts its coupe-styled rivals on price.
How to Get the Best MPG from Your QX65
Small habits add up. These tips can help you match or beat the QX65's EPA ratings, even in the Valley's demanding conditions.
Drive Smoothly and Use Eco Mode
Aggressive acceleration and hard braking waste the most fuel. Federal fuel economy guidance estimates that aggressive driving can lower gas mileage by roughly 15% to 30% at highway speeds and 10% to 40% in stop-and-go traffic.
- Select Eco mode for daily commuting and city errands
- Accelerate gradually and anticipate stops ahead
- Use cruise control on open stretches of freeway
- Keep freeway speeds between 65 and 70 mph when conditions allow
- Avoid long idling while you wait in parking lots
Keep Tires Properly Inflated in the Arizona Heat
Underinflated tires create more rolling resistance and cost you fuel. Check pressure at least once a month while the tires are cold, and inflate them to the figure on the driver's door jamb rather than the maximum printed on the sidewall.
Arizona's daily temperature swings make this especially important. A tire checked on a hot afternoon reads higher than the same tire at dawn, so early-morning checks give the most accurate result.
Lighten the Load and Reduce Drag
Extra weight and exterior accessories both reduce efficiency. Take a minute before each trip to clear out gear you don't need.
- Remove roof boxes and bike racks when you aren't using them
- Unload heavy sports equipment and tools between trips
- Pack heavier items low in the cargo area instead of on the roof
- Close the windows at freeway speeds to cut aerodynamic drag
Use Premium Fuel and Stay on Schedule with Maintenance
Filling up with the premium fuel INFINITI specifies lets the VC-Turbo run at its most efficient settings. Routine maintenance matters too, because a clogged air filter, the wrong oil grade, or a misaligned front end can chip away at fuel economy over time.
- Follow the oil change interval in your QX65 maintenance schedule
- Replace the engine air filter when an inspection shows it's dirty
- Have the alignment checked if the steering pulls or tires wear unevenly
- Use the oil grade listed in your owner's manual
The factory-trained technicians at Coulter INFINITI can handle all of this maintenance for you with genuine INFINITI parts.
Test Drive the 2027 INFINITI QX65 at Coulter INFINITI in Mesa
The best way to judge any vehicle's efficiency, comfort, and performance is to drive it yourself. Our team can walk you through every QX65 trim and help you decide which one fits your budget and daily routine.
Visit Our Mesa Showroom
You'll find us at 6225 East Test Drive, Mesa, AZ 85206, just off the US-60 Superstition Freeway. As an INFINITI dealer serving Mesa, AZ, we also welcome drivers from Gilbert, Chandler, Queen Creek, San Tan Valley, Gold Canyon, Apache Junction, Tempe, and Scottsdale.
Get Answers Specific to Your Driving
Tell us how and where you drive, and we'll help you estimate what the QX65 will cost to fuel each month. We can also compare it with the QX60 or QX80 if you're deciding between INFINITI models.
In the same visit, our sales team can review current QX65 inventory, financing options, and your trade-in value.
Contact Coulter INFINITI
Call our sales team at (480) 887-0678 or stop by during showroom hours. For maintenance questions, our service department is available at (480) 525-8127.
| Contact Method | Details | Best For |
|---|---|---|
| Sales Phone | (480) 887-0678 | QX65 availability, pricing, and test drive appointments |
| Service Phone | (480) 525-8127 | Maintenance, oil changes, and fuel economy concerns |
| Visit in Person | 6225 East Test Drive, Mesa, AZ 85206 | Test drives, trade-in appraisals, and financing |
| Sales Hours | Mon–Fri 8 AM–8 PM, Sat 8 AM–6 PM, Sun 11 AM–5 PM | Planning your showroom visit |
| Areas Served | Mesa, Gilbert, Chandler, Queen Creek, Tempe, Scottsdale, Gold Canyon, San Tan Valley | Convenient access across the East Valley and Greater Phoenix |
Conclusion: Is the QX65's MPG Right for You?
The 2027 INFINITI QX65 delivers EPA-estimated fuel economy of 20 mpg city, 26 mpg highway, and 22 mpg combined, with roughly 400 miles of range from its 18.49-gallon tank. It requires premium fuel and comes standard with all-wheel drive.
Those numbers are competitive for a stylish, turbocharged luxury SUV, and the QX65 pairs them with a 6,000-pound tow rating and a lower starting price than its coupe-styled rivals.
If you want the best MPG in the INFINITI SUV lineup, the QX60 is rated 2 mpg higher. If you want a sleek two-row design with strong performance and manageable fuel costs, the QX65 is a smart fit for Arizona driving.
Visit Coulter INFINITI at 6225 East Test Drive in Mesa, AZ 85206, or call (480) 887-0678 to schedule your QX65 test drive.
See the 2027 INFINITI QX65 and its efficient VC-Turbo engine in person at Coulter INFINITI, proudly serving Mesa, Gold Canyon, and the greater Phoenix area.
Find Your 2027 INFINITI QX65 at Coulter INFINITI in Mesa
Ready to see how the QX65's fuel economy fits your routine? Our Mesa team will help you compare trims, review current inventory, and plan a test drive that covers both freeway and surface-street miles.
Call us at (480) 887-0678 or visit 6225 East Test Drive, Mesa, AZ 85206. We'll answer your questions about MPG, premium fuel, and ownership costs with clear information and no pressure.
Whether you commute across the Valley every day or head north on weekends, the 2027 INFINITI QX65 is ready for the drive.