BMW X3 trim comparison
2024 BMW X3 M40i vs Base
The X3 M40i starts at $61,900 while the Base is $75,500. That $13,600 gap buys 6 meaningful differences.
This trim jump changes the engine from 3.0L I6 mild-hybrid Turbo to 3.0L I6 Turbo. Everything else is secondary to whether that powertrain difference matters for how you drive.
If you would notice the 3.0L I6 Turbo every week, the Base makes sense. If not, the M40i 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 $240/month more over 60 months, or roughly $14,400 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 M40i and Base are mechanically identical where it counts: the same 8-speed shiftable automatic transmission and identical wheelbase and body dimensions.
The upgrade math
You are paying $13,600 for 5 measurable differences, which works out to about $2,720 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 | M40i | Base |
|---|---|---|
| Pricing | ||
| MSRP | $61,900 | $75,500 |
| Powertrain | ||
| Engine | 3.0L I6 mild-hybrid Turbo | 3.0L I6 Turbo |
| Horsepower | 382 hp | 473 hp |
| Torque | 369 lb-ft | 457 lb-ft |
| Transmission | 8-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain | AWD | AWD |
| Fuel Economy | ||
| City MPG | 21 | 15 |
| Highway MPG | 26 | 20 |
| Combined MPG | 23 | 17 |
| Fuel Tank | 17.2 gal | 17.2 gal |
| Dimensions | ||
| Curb Weight | 4,392 lbs | 4,610 lbs |
| Wheelbase | 112.8" | 112.8" |
| Length | 185.9" | 186.0" |
| Width | 74.7" | 74.7" |
| Height | 66.0" | 65.7" |
| Safety | ||
| NHTSA Overall | 5/5 stars | 5/5 stars |
| IIHS Award | TSP+ | TSP+ |
| Warranty | ||
| Bumper-to-Bumper | 4yr/50k | 4yr/50k |
| Powertrain | 4yr/50k | 4yr/50k |
| Corrosion | 12yr/unlimited | 12yr/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.
2024 BMW X3 M40i vs Base Questions Shoppers Ask
Use this page for the direct trim answer, then zoom back out to the BMW X3 lineup, the BMW brand hub, the Compact 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 2024 X3 Base cost than the M40i?
The Base starts at $75,500 compared to $61,900 for the M40i. That is a $13,600 difference, or approximately $240/month more on a 60-month loan.
Do the 2024 BMW X3 M40i and Base have the same engine?
No. The M40i uses a 3.0L I6 mild-hybrid Turbo (382 hp, 369 lb-ft), while the Base has the 3.0L I6 Turbo (473 hp, 457 lb-ft). That is 91 more horsepower. Both pair with the same 8-speed shiftable automatic.
Do the 2024 X3 M40i and Base 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 X3 M40i or Base safer?
Both share the same BMW X3 platform with an overall 5-star NHTSA safety rating and an IIHS TSP+ designation. Safety ratings are model-level and identical across trims. The trim choice affects comfort and features, not crash protection.
What warranty does the 2024 BMW X3 come with?
All 2024 BMW X3 trims, including both the M40i and Base, come with BMW's standard warranty: 4yr/50k bumper-to-bumper and 4yr/50k powertrain coverage. Warranty does not vary by trim level.
Is the 2024 BMW X3 Base worth $13,600 more than the M40i?
The $13,600 buys the 3.0L I6 Turbo. If that powertrain matters for how you drive, yes. If not, the M40i does the same job for less.
Which 2024 BMW X3 trim gets better fuel economy, the M40i or the Base?
The M40i is the more efficient of the two at 23 combined MPG, versus 17 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 X3 Base Worth $13,600 More?
At $13,600 more, the X3 Base adds the 3.0L I6 Turbo engine (+91 hp). This is a situational call. If those features are on your must-have list, the upgrade makes sense. If not, the M40i delivers the same core X3 experience for less.
The Differences You'll Notice Most
Engine changes between these trims: the M40i has the 3.0L I6 mild-hybrid Turbo, the Base the 3.0L I6 Turbo. That means 91 more horsepower and 88 more lb-ft of torque. You will notice it most when merging, passing, or climbing at speed. In return, expect about 6 fewer combined MPG.
Fuel Economy Comparison
The X3 M40i gets 6 more combined MPG. At $3.50/gallon and 12,000 miles/year, that saves roughly $645 per year or $3,225 over five years of ownership.
Bottom Line
The X3 Base costs $13,600 more than the M40i (about $240/month more on a 60-month loan). That buys 5 meaningful changes at $2,720 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.
BMW X3 M40i
Value-trim add-onsThese picks fit the M40i best when the goal is covering the daily-use gaps without paying up to the next trim.
BMW X3 Base
Step-up trim add-onsThese picks suit the Base 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 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 BMW or any dealership.
Page updated 2026-03-18. Verify equipment, pricing, and regional availability with the manufacturer or dealer.