Lexus RX trim comparison
2026 Lexus RX 350h Premium vs 450h+ Premium
The RX 350h Premium starts at $55,000 while the 450h+ Premium is $65,230. That $10,230 gap buys 5 meaningful differences.
This trim jump changes the engine from 2.5L I4 hybrid to 2.5L I4 phev. Everything else is secondary to whether that powertrain difference matters for how you drive.
If you would notice the 2.5L I4 phev every week, the 450h+ Premium makes sense. If not, the 350h Premium is the cleaner stop because this jump matters for the powertrain first and the trim badge second.
The cleanest way to feel this upgrade is through the payment: about $180/month more over 60 months, or roughly $10,800 extra all-in once interest is included. If that different powertrain is not part of your real use case, the cheaper trim keeps more money in your pocket without changing the core experience you need.
Lock one trim, change the other side, and move through exact pair pages without resetting back to the full lineup every time.
Who notices the difference
The higher trim starts to make more sense when you are specifically shopping for the stronger powertrain, not just more trim content.
When both feel the same
The 350h Premium and 450h+ Premium are mechanically identical where it counts: the same continuously variable-speed automatic transmission and identical wheelbase and body dimensions.
The upgrade math
You are paying $10,230 for 4 measurable differences, which works out to about $2,558 per change.
Key Differences at a Glance
This is the fast read: price, power, efficiency, and the feature flips most likely to change the answer.
Every Difference, Side by Side
This is the full read behind the quick decision signals above: the complete hardware, comfort, and equipment story. 5 specification differences, 2 shared.
Full Specification Comparison
Specifications reflect available data as of early 2026. Confirm details with an authorized dealer before purchasing.
| Spec | 350h Premium | 450h+ Premium |
|---|---|---|
| Pricing | ||
| MSRP | $55,000 | $65,230 |
| Powertrain | ||
| Engine | 2.5L I4 hybrid | 2.5L I4 phev |
| Horsepower | 246 hp | 304 hp |
| Torque | 233 lb-ft | No published data |
| Transmission | continuously variable-speed automatic | continuously variable-speed automatic |
| Drivetrain | AWD | AWD |
| Fuel Economy | ||
| City MPG | 37 | 37 |
| Highway MPG | 34 | 34 |
| Combined MPG | 36 | 36 |
| Fuel Tank | 17.2 gal | 14.5 gal |
| Annual Fuel Cost (EPA) | $1,600/yr | $1,600/yr |
| Dimensions | ||
| Curb Weight | 4,480 lbs | 4,810 lbs |
| Wheelbase | 112.2" | 112.2" |
| Length | 192.5" | 192.5" |
| Width | 75.6" | 75.6" |
| Height | 67.3" | 67.3" |
| Safety | ||
| NHTSA Overall | 5/5 stars | 5/5 stars |
| Warranty | ||
| Bumper-to-Bumper | 4yr/50k | 4yr/50k |
| Powertrain | 6yr/70k | 6yr/70k |
| Corrosion | 6yr/unlimited | 6yr/unlimited |
| Roadside Assistance | 4yr/unlimited | 4yr/unlimited |
Data sources: licensed third-party automotive data, EPA fueleconomy.gov, NHTSA, and official manufacturer materials. Values marked est. are estimated.
2026 Lexus RX 350h Premium vs 450h+ Premium Questions Shoppers Ask
Use this page for the direct trim answer, then zoom back out to the Lexus RX lineup, the Lexus brand hub, the Midsize SUVs, the how to pick a trim guide, or our mid-trim value research when you need the bigger shopping path behind this one matchup.
How much more does the 2026 RX 450h+ Premium cost than the 350h Premium?
The 450h+ Premium starts at $65,230 compared to $55,000 for the 350h Premium. That is a $10,230 difference, or approximately $180/month more on a 60-month loan.
Do the 2026 Lexus RX 350h Premium and 450h+ Premium have the same engine?
No. The 350h Premium uses a 2.5L I4 hybrid (246 hp, 233 lb-ft), while the 450h+ Premium has the 2.5L I4 phev (304 hp). That is 58 more horsepower. Both pair with the same continuously variable-speed automatic.
Do the 2026 RX 350h Premium and 450h+ Premium have the same drivetrain?
Yes. Both come with AWD as standard. The differences between these trims are in features and equipment, not drivetrain.
Is the 2026 RX 350h Premium or 450h+ Premium safer?
Both share the same Lexus RX platform with an overall 5-star NHTSA safety rating. Safety ratings are model-level and identical across trims. The trim choice affects comfort and features, not crash protection.
What warranty does the 2026 Lexus RX come with?
All 2026 Lexus RX trims, including both the 350h Premium and 450h+ Premium, come with Lexus's standard warranty: 4yr/50k bumper-to-bumper and 6yr/70k powertrain coverage. Warranty does not vary by trim level.
Is the 2026 Lexus RX 450h+ Premium worth $10,230 more than the 350h Premium?
The $10,230 buys the 2.5L I4 phev. If that powertrain matters for how you drive, yes. If not, the 350h Premium does the same job for less.
The Full Story Behind This Price Gap
Use the direct answer above for this exact matchup, then use these guides to understand whether you are really looking at a feature step-up, a package shuffle, or the point where the lineup starts changing in a meaningful way.
Is the RX 450h+ Premium Worth $10,230 More?
At $10,230 more, the RX 450h+ Premium adds the 2.5L I4 phev engine (+58 hp). This is a situational call. If those features are on your must-have list, the upgrade makes sense. If not, the 350h Premium delivers the same core RX experience for less.
The Differences You'll Notice Most
Engine changes between these trims: the 350h Premium has the 2.5L I4 hybrid, the 450h+ Premium the 2.5L I4 phev.
Bottom Line
The RX 450h+ Premium costs $10,230 more than the 350h Premium (about $180/month more on a 60-month loan). That buys 4 meaningful changes at $2,558 per change. Whether that trade-off is worth it depends on which features matter to your daily driving.
Trim-Matched Accessories
These add-ons are split by trim intent so the recommendations follow the actual use case, not just the same repeated product block.
Lexus RX 350h Premium
Value-trim add-onsThese picks fit the 350h Premium best when the goal is covering the daily-use gaps without paying up to the next trim.
Lexus RX 450h+ Premium
Step-up trim add-onsThese picks suit the 450h+ Premium when you want the accessories to match the nicer cabin, broader utility, or more premium use case.
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Specifications shown combine licensed third-party automotive data with official manufacturer, EPA, and NHTSA source material for the 2026 model year. Actual pricing, features, and availability may vary by region and dealer. Always confirm details with an authorized dealer before making a purchase decision. TrimAtlas is not affiliated with Lexus or any dealership.
Page updated 2026-03-18. Verify equipment, pricing, and regional availability with the manufacturer or dealer.