2010 Lexus RX 450h: MPG and fuel economy
The 2010 Lexus RX 450h is a hybrid rated at 30 combined MPG by the U.S. Environmental Protection Agency. It returns 32 MPG in the city and 28 MPG on the highway.
This page collects every fuel-economy figure the EPA publishes for the 2010 Lexus RX 450h. Below you will find the headline combined, city, and highway MPG, the estimated annual fuel cost at three different driving levels, the tailpipe CO₂ emissions, and a full breakdown of the engine and drivetrain. If you want to know whether this generation got more or less efficient over the years, the year-over-year table further down covers every model year the EPA has rated.
Key takeaways
- Returns 46% better combined MPG than the average car in the Sport Utility Vehicle - 2WD class for the 2010 model year (20.5 MPG class average).
- The most efficient car in the Sport Utility Vehicle - 2WD class for the 2010 model year is the Ford Escape Hybrid FWD at 32 MPG.
- Requires premium gasoline, which typically adds about 40 to 60 cents per gallon to the EPA's annual fuel cost estimate.
Fuel economy at a glance
These are the EPA's official ratings for the 2010 Lexus RX 450h. The numbers come from a standardised laboratory test cycle and are the same figures that appear on the window sticker of every new car. Real-world mileage varies with driving style, weather, fuel quality, and how heavily loaded the car is.
Combined MPG is a 55/45 weighted blend of the city and highway test cycles. The EPA uses it as the single number you can compare across the entire dataset, including hybrids and EVs (which use the equivalent MPGe figure).
| Combined MPG | 30 MPG |
| City MPG | 32 MPG |
| Highway MPG | 28 MPG |
| Annual fuel cost | $2,300 |
| Tailpipe CO₂ | 296 g/mi |
| Fuel type | Premium |
How the 2010 Lexus RX 450h compares
The 2010 Lexus RX 450h returns 30 combined MPG. Cars in the Sport Utility Vehicle - 2WD class for the same model year average 20.5 MPG, which puts this car ahead of the class average by about 46%.
The most efficient car in the Sport Utility Vehicle - 2WD class for the 2010 model year is the Ford Escape Hybrid FWD at 32 MPG. The bar chart below puts the Lexus RX 450h alongside the class best and the class average so you can see the full picture.
For broader context, the average new car of the 2010 model year (across all classes) returns 20.2 MPG. Larger vehicles pull the all-cars average down, so do not use that figure on its own to judge a small car or a hybrid. The full list of the most efficient cars of the 2010 model year is on its own page.
Annual fuel cost across driving patterns
The headline annual fuel cost the EPA publishes assumes 15,000 miles of driving per year and a fuel mix of 55% city and 45% highway. The dollar figure is calculated using the EPA's current reference price for premium gasoline, which is $4.61/gallon. EPA updates that reference periodically rather than tracking live pump prices, so treat it as a window-sticker estimate rather than today's pump number.
The table below scales the EPA's number to three common driving patterns. The combined MPG and the reference fuel price stay constant, only the annual mileage changes. To get a current-prices estimate, take your local gas price and multiply by 500 gallons (the car's annual consumption at the rated MPG).
| Driving pattern | Estimated annual fuel cost |
|---|---|
| Light driver, 7,500 miles per year | $1,150 |
| Average driver, 15,000 miles per year | $2,300 |
| Heavy driver, 25,000 miles per year | $3,833 |
Year-over-year MPG for the Lexus RX 450h
The EPA has rated the Lexus RX 450h across 7 model years, from 2010 Lexus RX 450h through 2016 Lexus RX 450h. The numbers below are the best combined MPG figure the EPA published for each year, which lets you see when the car was at its most efficient and how recent generations stack up.
Combined MPG has stayed in roughly the same range across the run, hovering close to 30 MPG.
| Year | Combined MPG | Open year page |
|---|---|---|
| 2016 | 30 MPG | 2016 Lexus RX 450h |
| 2015 | 29 MPG | 2015 Lexus RX 450h |
| 2014 | 29 MPG | 2014 Lexus RX 450h |
| 2013 | 29 MPG | 2013 Lexus RX 450h |
| 2012 | 29 MPG | 2012 Lexus RX 450h |
| 2011 | 29 MPG | 2011 Lexus RX 450h |
| 2010 | 30 MPG | this page |
Compare against other Sport Utility Vehicle - 2WD for 2010
If you are cross-shopping the 2010 Lexus RX 450h, the most useful comparison is against the other cars in the Sport Utility Vehicle - 2WD class for the same model year. The list below shows the highest-MPG peers, ranked from most to least efficient. Click any of them to open its full page.
The Ford Escape Hybrid FWD leads this group at 32 MPG, 2 MPG ahead of the 2010 Lexus RX 450h.
Specifications
The 2010 Lexus RX 450h runs a 3.5-liter 6-cylinder engine paired with a automatic (av-s6), sending power through front-wheel drive.
Engine, transmission, and drivetrain together drive most of the variation in fuel economy across trims. A larger engine moves the car with less effort but burns more fuel. A turbo lets a small engine punch above its weight, often without much MPG penalty. All-wheel drive adds traction and weight, and usually costs a couple of MPG compared with two-wheel drive of the same engine.
- Vehicle class
- Sport Utility Vehicle - 2WD
- Engine
- 3.5L 6-cylinder
- Transmission
- Automatic (AV-S6)
- Drivetrain
- Front-Wheel Drive
- Fuel type
- Premium
- Annual petroleum use
- 9.9 barrels per year
- Start-stop system
- Yes
Common questions about the 2010 Lexus RX 450h
Quick answers to the questions people most often search for when looking up the 2010 Lexus RX 450h.
-
Is the 2010 Lexus RX 450h fuel efficient?
Yes. The 2010 Lexus RX 450h returns 30 combined MPG, which beats the average car in the Sport Utility Vehicle - 2WD class for the same model year by about 46%. -
What MPG does the 2010 Lexus RX 450h get?
The EPA rates the 2010 Lexus RX 450h at 30 combined MPG, 32 MPG in city driving, and 28 MPG on the highway. Real-world numbers depend on your driving style, the weather, and how loaded the car is. -
How much does it cost to fuel a 2010 Lexus RX 450h per year?
The EPA estimates an annual fuel cost of $2,300 for the 2010 Lexus RX 450h. That figure assumes 15,000 miles of driving per year, a 55% city and 45% highway split, and the EPA's published average fuel price for the rated fuel grade. -
Does the 2010 Lexus RX 450h require premium gas?
Yes. The EPA lists the 2010 Lexus RX 450h as requiring premium gasoline. Running it on regular can reduce performance and may affect engine warranties, so it is not a recommended way to save at the pump. -
Has the Lexus RX 450h become more fuel efficient over time?
Combined MPG has stayed close to flat across the run. Both the earliest (2010 Lexus RX 450h, 30 MPG) and most recent (2016 Lexus RX 450h, 30 MPG) versions sit in the same range. -
How much CO₂ does the 2010 Lexus RX 450h emit?
Tailpipe CO₂ emissions are 296 g/mi. Multiplied across a typical year of driving (15,000 miles) that works out to about 4,444 kilograms of CO₂. -
What is the difference between the city and highway MPG of the 2010 Lexus RX 450h?
City driving returns 32 MPG and highway driving returns 28 MPG. A flat (or city-better) split is the signature of a hybrid or electric drivetrain, where regenerative braking recovers energy that would otherwise be lost in stop-start city traffic. -
What engine is in the 2010 Lexus RX 450h?
The 2010 Lexus RX 450h has a 3.5-liter 6-cylinder engine (EPA description: Hybrid; PR). -
What transmission and drivetrain does the 2010 Lexus RX 450h have?
The 2010 Lexus RX 450h comes with a automatic (av-s6) transmission and front-wheel drive. -
How does the 2010 Lexus RX 450h compare to the best car in its class?
The most efficient car in the Sport Utility Vehicle - 2WD class for the 2010 model year is the Ford Escape Hybrid FWD at 32 combined MPG. The Lexus RX 450h returns 30 MPG, a gap of 2 MPG. If you are comparing on fuel economy alone, the class leader is worth a look.
Source: U.S. EPA fuel economy dataset. Annual fuel cost figures assume 15,000 miles of driving per year and a 55% city, 45% highway split. Real-world mileage varies with driving conditions, vehicle maintenance, fuel quality, and driver behaviour.