What is the fuel economy of a 2012 Lexus 450h?
The 2012 Lexus RX 450h is EPA-rated at 32 mpg in the city, 28 mpg on the highway, and 30 mpg combined, reflecting its hybrid powertrain. These figures provide a baseline for expectations under typical driving conditions.
EPA fuel economy figures
The following estimates come from the U.S. Environmental Protection Agency for the 2012 RX 450h in its standard all-wheel-drive configuration.
- City: 32 mpg
- Highway: 28 mpg
- Combined: 30 mpg
Note: EPA figures are derived from standardized tests. Real-world mileage can vary based on driving style, terrain, climate, and maintenance.
How the RX 450h achieves these numbers
The RX 450h pairs a 3.5-liter V6 engine with an electric motor and a lithium hybrid battery, managed by Lexus Hybrid Drive. In city driving, the electric motor and regenerative braking boost efficiency, while highway cruising relies more on the gasoline engine’s efficiency.
What affects real-world mileage
Actual mileage depends on factors such as driving patterns (city vs. highway), climate-control usage, tire pressure and condition, vehicle load, and regular maintenance of the hybrid system.
Summary
For buyers and owners, the 2012 RX 450h typically delivers about 32 mpg in the city, 28 mpg on the highway, and 30 mpg combined under EPA testing. Real-world results usually fall near this range, with variations due to driving habits and conditions.
Is the 2012 Lexus 450h reliable?
The 2012 Lexus RX 450h is a very reliable vehicle, receiving high marks from consumer review sites and experts. It has an average annual repair cost lower than the average luxury midsize SUV, though some owners report issues with the hybrid system's battery or compressor. Overall, it is a durable car expected to last 200,000-250,000 miles or more with proper maintenance.
This video reviews the Lexus RX 450h and discusses its reliability: 21sHigh Peak AutosYouTube · Jun 11, 2020
Positive aspects
- High reliability scores: Receives high reliability ratings from sources like RepairPal (4.0 out of 5) and Cars.com (4.9 out of 5).
- Low ownership costs: Has a lower-than-average annual repair cost of about $540.
- Durability: Can last between 200,000 and 250,000 miles or more with proper care.
- Chain-driven engine: The engine has a timing chain, so there is no need to replace a timing belt.
- Robust hybrid system: The hybrid power unit is known to be very reliable, with some owners reporting half a million miles without issues.
Potential issues to consider
- Suspension problems: Due to its weight, the vehicle can develop suspension issues, including leaks and compressor problems.
- Oil hose leaks: Some owners have reported a burst oil hose causing an oil leak, though dealers typically fixed this for free.
- Hybrid system noise: Some users note a noisy hybrid system.
- GPS and technology: The navigation system can have outdated maps and poor voice recognition.
Before you buy
- Check for maintenance records: Since the hybrid components are long-lasting, proper maintenance is key.
- Inspect suspension: Check the suspension for any signs of leaks or wear.
- Be cautious of low-mileage vehicles: Cars with very low mileage might have been used primarily for city driving, which can be harder on the vehicle. A car with high mileage that was used for long highway journeys could be a better value, as noted by RAC.
How many miles per gallon does a 2012 Lexus 450h get?
32 mpg city/28 mpg highway
The EPA estimates fuel economy at 32 mpg city/28 mpg highway and 30 mpg in combined driving for the FWD model, while the AWD scores slightly less at 30/28/29 mpg. Properly equipped, the RX 450h can tow up to 3,500 pounds.
How long does a Lexus 450h hybrid battery last?
A Lexus RX 450h hybrid battery typically lasts between 150,000 and 200,000 miles, or approximately 15 years, under normal driving conditions. However, this is an average, and factors such as driving habits can cause the battery to last longer or require replacement sooner.
Factors that influence hybrid battery life
- Driving style: Aggressive driving can put more strain on the battery, while a smooth, consistent driving style can extend its life.
- Climate: Extreme temperatures can impact battery performance over time.
- Maintenance: Keeping the area under the rear seats clean can help the battery's cooling system function properly.
- Usage: A battery in a vehicle that is driven frequently will likely have its components cycled more often than one that is not driven as regularly.
Signs of a failing hybrid battery
A warning light appears on the dashboard, The car has difficulty starting, The headlights appear dim, and The engine cranks slowly when starting the vehicle.
What are the common problems with the RX 450h?
Worn CV joints. Damaged motor or transmission mounts. Wheel alignment issues.
