Subaru Outback trim comparison
2024 Subaru Outback Base vs Onyx Edition XT
The Outback Base starts at $28,895 while the Onyx Edition XT is $39,360. That $10,465 gap buys 6 meaningful differences.
This trim jump changes the engine from 2.5L flat 4 to 2.4L flat 4 Turbo. Everything else is secondary to whether that powertrain difference matters for how you drive.
Start with the Base if the 2.5L flat 4 already feels sufficient for the way you drive. Step up to the Onyx Edition XT only when the 2.4L flat 4 Turbo powertrain is the reason you are moving higher in the lineup.
The cleanest way to feel this upgrade is through the payment: about $184/month more over 60 months, or roughly $11,040 extra all-in once interest is included. The payment only makes sense if that different powertrain matters to the way you actually drive, tow, or live with the vehicle.
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
Both the Base and Onyx Edition XT share the same continuously variable-speed automatic transmission and identical wheelbase and body dimensions.
The upgrade math
You are paying $10,465 for 5 measurable differences, which works out to about $2,093 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. 6 specification differences, 1 shared.
Full Specification Comparison
Specifications reflect available data as of early 2024. Confirm details with an authorized dealer before purchasing.
| Spec | Base | Onyx Edition XT |
|---|---|---|
| Pricing | ||
| MSRP | $28,895 | $39,360 |
| Powertrain | ||
| Engine | 2.5L flat 4 | 2.4L flat 4 Turbo |
| Horsepower | 182 hp | 260 hp |
| Torque | 176 lb-ft | 277 lb-ft |
| Transmission | continuously variable-speed automatic | continuously variable-speed automatic |
| Drivetrain | AWD | AWD |
| Fuel Economy | ||
| City MPG | 26 | 22 |
| Highway MPG | 32 | 29 |
| Combined MPG | 28 | 25 |
| Fuel Tank | 18.5 gal | 18.5 gal |
| Annual Fuel Cost (EPA) | $1,550/yr | No published data |
| Dimensions | ||
| Curb Weight | 3,661 lbs | 3,921 lbs |
| Wheelbase | 108.1" | 108.1" |
| Length | 191.1" | 191.1" |
| Width | 73.0" | 73.0" |
| Height | 66.1" | 66.1" |
| Safety | ||
| NHTSA Overall | 5/5 stars | 5/5 stars |
| Warranty | ||
| Bumper-to-Bumper | 3yr/36k | 3yr/36k |
| Powertrain | 5yr/60k | 5yr/60k |
| Corrosion | 5yr/unlimited | 5yr/unlimited |
| Roadside Assistance | 3yr/36k | 3yr/36k |
Data sources: licensed third-party automotive data, EPA fueleconomy.gov, NHTSA, and official manufacturer materials. Values marked est. are estimated.
2024 Subaru Outback Base vs Onyx Edition XT Questions Shoppers Ask
Use this page for the direct trim answer, then zoom back out to the Subaru Outback lineup, the Subaru brand hub, the Midsize Sedans, 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 2024 Outback Onyx Edition XT cost than the Base?
The Onyx Edition XT starts at $39,360 compared to $28,895 for the Base. That is a $10,465 difference, or approximately $184/month more on a 60-month loan.
Do the 2024 Subaru Outback Base and Onyx Edition XT have the same engine?
No. The Base uses a 2.5L flat 4 (182 hp, 176 lb-ft), while the Onyx Edition XT has the 2.4L flat 4 Turbo (260 hp, 277 lb-ft). That is 78 more horsepower. Both pair with the same continuously variable-speed automatic.
Do the 2024 Outback Base and Onyx Edition XT 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 2024 Outback Base or Onyx Edition XT safer?
Both share the same Subaru Outback 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 2024 Subaru Outback come with?
All 2024 Subaru Outback trims, including both the Base and Onyx Edition XT, come with Subaru's standard warranty: 3yr/36k bumper-to-bumper and 5yr/60k powertrain coverage. Warranty does not vary by trim level.
Is the 2024 Subaru Outback Onyx Edition XT worth $10,465 more than the Base?
The $10,465 buys the 2.4L flat 4 Turbo. If that powertrain matters for how you drive, yes. If not, the Base does the same job for less.
Which 2024 Subaru Outback trim gets better fuel economy, the Base or the Onyx Edition XT?
The Base is the more efficient of the two at 28 combined MPG, versus 25 for the other trim. That matters most if you are balancing running costs against the extra power, drivetrain, or comfort equipment tied to the pricier trim.
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 Outback Onyx Edition XT Worth $10,465 More?
The Outback Onyx Edition XT costs $10,465 more than the Base. Whether that is worth it depends on how much you value the 2.4L flat 4 Turbo engine (+78 hp). Power and comfort matter differently to different buyers. Weigh them against your priorities.
The Differences You'll Notice Most
Engine changes between these trims: the Base has the 2.5L flat 4, the Onyx Edition XT the 2.4L flat 4 Turbo. That means 78 more horsepower and 101 more lb-ft of torque. That extra power shows up most clearly once you are out of town and asking more of the drivetrain. The cost of that extra capability is roughly 3 fewer combined MPG.
Fuel Economy Comparison
The Outback Base gets 3 more combined MPG. At $3.50/gallon and 12,000 miles/year, that saves roughly $180 per year or $900 over five years of ownership.
Bottom Line
$10,465 more for the Outback Onyx Edition XT gets you 5 real differences. At $184/month more, the question is whether those specific changes are things you will use regularly.
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.
Subaru Outback Base
Value-trim add-onsThese picks fit the Base best when the goal is covering the daily-use gaps without paying up to the next trim.
Subaru Outback Onyx Edition XT
Step-up trim add-onsThese picks suit the Onyx Edition XT when you want the accessories to match the nicer cabin, broader utility, or more premium use case.
As an Amazon Associate, TrimAtlas earns from qualifying purchases.
Specifications shown combine licensed third-party automotive data with official manufacturer, EPA, and NHTSA source material for the 2024 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 Subaru or any dealership.
Page updated 2026-03-18. Verify equipment, pricing, and regional availability with the manufacturer or dealer.