2017 Lexus RX 450h — Full Specifications

Reviewed by the 247VehicleCheck Data Team — automotive data reviewers

As an Amazon Associate and CJ Affiliate and AWIN publisher we earn from qualifying purchases. Links below are affiliate links.

36Combined MPG (UK)

3.5L 6-cylEngine

Premium GasolineFuel Type

N/AInsurance Group UK

N/ANHTSA Safety

185CO₂ g/km

Running gear matters most — before anything else, UK: check tyre prices at TirendoUS: check wheel & tyre prices at WheelHero for this car's fitment.

The 2017 Lexus RX 450h is a suv powered by a 3.5L 6-cyl premium gasoline engine, returning around 36 mpg (UK) / 30.0 mpg (US EPA) combined. Owners often keep a Lexus RX 450h workshop manual to hand for servicing and repairs.

Full Specifications

Engine	3.5L 6-cyl
Transmission	Automatic (AV-S6)
Fuel Type	Premium Gasoline
Powertrain	Hybrid
Drive	All-Wheel Drive
Body Style	SUV
Seats	Data not available
Length	Data not available
Width	Data not available
Height	Data not available
Kerb Weight	Data not available
Fuel Economy (UK)	36 combined / 37 urban / 34 extra-urban mpg
Fuel Economy (US EPA)	30.0 combined / 31.0 city / 28.0 highway mpg
CO₂ Emissions	185 g/km

Owner Essentials for the Lexus RX 450h

EONON Upgrade the stereo — Android head units and CarPlay systems built for this kind of car Shop Eonon Car Stereos → REXING Protect yourself on the road — Rexing dash cams have 10,000+ reviews and an 18-month warranty Shop Rexing Dash Cams → Amazon Lexus Rx 450h Oil Filter Check Price →

UK Running Costs

Insurance group not available — check with your insurer. At around 8,000 miles per year and 36 mpg combined, expect roughly 1010 litres of fuel annually — multiply by your local price per litre for a cost estimate. Work out exact fuel costs with the fuel cost calculator on 247Calculators. Planning a road trip? turn this SUV into a basecamp with Traverseon's sleeping-platform kit .

Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.

Planning a road trip? Grab a road trip packing list. Only need this car occasionally? See our buy vs rent comparison.

Safety Ratings (NHTSA)

NHTSA crash test data not available for this model year.

How It Compares

How does the Lexus RX 450h compare to similar SUVs? For context, SUVs in our database average around 27 mpg (UK) combined — this model's 36 mpg figure is 9 mpg better than that average. Its 185 g/km CO₂ figure is 76 g/km lower than the 261 g/km average for SUVs on this site. This comparison is based on 894 SUVs in our dataset.

Last updated: 12 September 2026 · Data: US EPA (fueleconomy.gov) & NHTSA snapshots 18 July 2026; Wikidata & curated EU catalogue 18 July 2026

Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.

Recommended Accessories

CARLA Thinking of trying one before you buy? Rent it first — book now, pay later Rent a Car with Carla → LAWDEPOT Selling or leasing this car? Get a legally sound Bill of Sale or lease agreement in minutes Create a Document with LawDepot →

Frequently Asked Questions

What engine does the 2017 Lexus RX 450h have?

It's fitted with a 3.5L 6-cyl premium gasoline engine, paired with a automatic (av-s6) transmission.

What is the fuel economy of the 2017 Lexus RX 450h?

It returns around 36 mpg (UK) combined, or 30.0 mpg on the US EPA cycle.

Does the 2017 Lexus RX 450h have a good safety rating?

NHTSA crash test data is not available for this model year.

How many seats does the 2017 Lexus RX 450h have?

Seating capacity data is not available for this model year. It's classed as a suv.

Is the Lexus RX 450h's fuel economy good for a SUV?

Yes — it returns around 36 mpg (UK) combined, against a same-body-style average of roughly 27 mpg among the SUVs we track, making it one of the more efficient options in its class.