What is the difference between a 350L and a RX 350?
The RX 350L is the longer, three-row version of Lexus’s RX lineup, while the RX 350 is the standard two-row model. They share the same V6 engine and most mechanicals, but the L adds a third row and extra length, which changes seating, cargo space, and efficiency.
In this article, we’ll unpack what that means for everyday use, including who each model suits best, how their interiors differ, and what you should expect when comparing them on the dealer lot or in a used-car search.
What each model is designed to offer
The RX 350 is Lexus’s conventional two-row luxury SUV, prioritizing passenger comfort in two rows with ample cargo space behind the second row. The RX 350L adds a longer footprint and a third-row seat, aiming to expand seating capacity and provide a family-friendly option without stepping up to a larger, full-size SUV.
Key differences that affect buyers
Seating and space
The core distinction is seating. The RX 350 comfortably seats five in two rows. The RX 350L adds a third row, typically allowing seven-passenger seating, but the third row is best suited for children or shorter trips due to limited legroom. In everyday use, the extra row reduces available cargo space when the seats are up, and folding the third row increases versatility significantly.
Dimensions and practicality
Powertrain and performance
Both models typically share the same 3.5-liter V6 engine and a smooth eight-speed automatic transmission, with all-wheel drive available as an option. In practice, power and acceleration are very similar, since the main difference is weight from the added third row rather than a different motor or tuning. Expect similar on-road character, with the L’s extra weight contributing to a slight hit in efficiency and sportiness compared with the two-row RX 350.
Fuel economy
Because the RX 350L is heavier and often carries more occupants, its EPA-estimated fuel economy can be a touch lower than the RX 350. Real-world fuel use will depend on wheelbase choice, drivetrain, and driving style, but the difference is usually modest rather than dramatic.
Interior features and trims
Trim levels are generally aligned between the two, but the RX 350L’s interior is configured to accommodate the third row and the extra seating likely comes with different cabin plastics and space allocations. In some markets and model years, the L badge signals the longer body and three-row layout more than a distinct feature set.
Availability and market notes
The RX 350L was offered in certain markets and model years as a seven-seat alternative to the standard RX 350. Availability varied by region and year, and in many recent lineups the emphasis has shifted toward two-row configurations with other options for larger passenger needs. If you’re shopping used, you’ll often encounter the RX 350L as a mid-generation variant with the three-row setup, while new models may present without the L badge in some markets.
Which should you choose?
Choose the RX 350 if you primarily want a luxe two-row SUV with maximum cargo space behind the second row, strong on-road manners, and slightly better efficiency. Opt for the RX 350L if you frequently transport seven passengers or need the flexibility of a third row for occasional use, and you’re willing to sacrifice a bit of cargo space and fuel economy for the extra seating.
Summary
The main difference between the RX 350L and the RX 350 is seating and size: the 350L adds a third row and extra length, increasing passenger capacity but reducing cargo space when the third row is in use and typically lowering fuel efficiency a little. The RX 350 remains the more practical choice for most daily needs if five passengers and more cargo room behind the second row are priorities. Engine performance and most core mechanics are broadly shared, meaning the decision comes down to how you use the interior and whether you value a seventh seat at cruising speeds and highway trips.
What is the difference between RX 350 and 350L?
The main difference is that the RX 350 has a two-row, five-seat configuration, while the RX 350L has a third row to accommodate up to seven passengers. The RX 350L is a longer version of the RX 350, with the added length exclusively for the third-row seating. In other aspects, performance, such as the 3.5L V6 engine, is largely the same, but the RX 350L may have slightly lower horsepower and fuel economy due to its larger size and weight.
RX 350
- Seating: Two rows with seating for up to five passengers.
- Configuration: Offers 16 cubic feet of cargo space behind the second row.
- Performance: Generally has slightly higher horsepower and better fuel efficiency compared to the RX 350L.
RX 350L
- Seating: Three rows with seating for up to seven passengers.
- Configuration: Includes a longer body to accommodate the third row, with power-folding seats for flexibility in cargo and passenger space.
- Performance: Has a V6 engine, but is slightly heavier and less fuel-efficient due to the extra length and weight.
You can watch this video to see a comparison between the two models: 46sMichael LintermanYouTube · Oct 30, 2020
Key considerations
- Passenger needs: Choose the RX 350L if you regularly need to transport more than five people.
- Fuel economy: The standard RX 350 is more fuel-efficient.
- Cargo space: While the RX 350L has a smaller cargo area with the third row in use, it offers more versatile cargo options when the third row is folded down compared to the standard RX 350.
What year to stay away from Lexus RX 350?
You should be cautious of the 2007, 2008, 2010, 2016, and 2017 Lexus RX 350 model years, as they have been flagged for more common issues like oil leaks, transmission problems, faulty rain sensors, and airbag warning lights. Avoiding these specific years can help prevent potential headaches and costly repairs.
This video discusses common issues and recalls for Lexus RX models from 2015 to 2022: 59sThe Miles DrivenYouTube · Dec 18, 2024
Specific model years to avoid and their associated issues
- 2007, 2008, 2010: These years are often cited for common problems, including oil leaks, dashboard cracking, and air conditioning issues.
- 2016: This year is associated with problems related to the front airbag propellers and potential issues with the power steering system.
- 2017: A recurring issue for this model year is a faulty rain-sensing feature, where the sensors don't work correctly and the wipers malfunction.
General tips for buying a used RX 350
- Perform a thorough inspection: Check for signs of oil leaks, as this is a common issue across several model years.
- Inspect interior components: Look for signs of dashboard cracking or other premature wear and tear.
- Verify maintenance records: Proper fluid changes are crucial for maintaining the transmission's health.
- Research recalls: Check for any open recalls on the specific vehicle you are considering.
What does the L mean on RX 350L?
The two-tone 20” wheels look great with all the chrome accents and chrome roof rails. And even though this is the longer version of the RX350 (the L in RX350L stands for long), it is hardly noticeable from the exterior.
How much longer is the RX 350L?
Appearance. The 2021 RX 350 has a length of 192.5 inches, and the RX 350L has a length of 196.9 inches.
