BMW X3 trim comparison
2024 BMW X3 sDrive30i vs M40i
The X3 sDrive30i starts at $46,900 while the M40i is $61,900. That $15,000 gap buys 7 meaningful differences.
This is a powertrain and drivetrain change. The M40i gets the 3.0L I6 mild-hybrid Turbo and AWD, so the $15,000 is buying a different driving experience, not just nicer trim.
This is a real hardware fork, not just a trim-label shuffle. The sDrive30i is enough if the 2.0L I4 Turbo with RWD already fits your routine; the M40i only earns the jump when the 3.0L I6 mild-hybrid Turbo and AWD setup is the point of the upgrade.
If you are budgeting this move monthly, the jump from the sDrive30i to the M40i is about $264/month on a 60-month loan at 6.5% APR with 10% down. That works out to roughly $15,840 more by the time interest is counted. 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 sDrive30i and M40i 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 $15,000 for 6 measurable differences, which works out to about $2,500 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. 7 specification differences, 0 shared.
Full Specification Comparison
Specifications reflect available data as of early 2024. Confirm details with an authorized dealer before purchasing.
| Spec | sDrive30i | M40i |
|---|---|---|
| Pricing | ||
| MSRP | $46,900 | $61,900 |
| Powertrain | ||
| Engine | 2.0L I4 Turbo | 3.0L I6 mild-hybrid Turbo |
| Horsepower | 248 hp | 382 hp |
| Torque | 258 lb-ft | 369 lb-ft |
| Transmission | 8-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain | RWD | AWD |
| Fuel Economy | ||
| City MPG | 23 | 21 |
| Highway MPG | 29 | 26 |
| Combined MPG | 25 | 23 |
| Fuel Tank | 17.2 gal | 17.2 gal |
| Annual Fuel Cost (EPA) | $2,300/yr | No published data |
| Dimensions | ||
| Curb Weight | 4,079 lbs | 4,392 lbs |
| Wheelbase | 112.8" | 112.8" |
| Length | 185.9" | 185.9" |
| Width | 74.4" | 74.7" |
| Height | 66.0" | 66.0" |
| 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 sDrive30i vs M40i 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 M40i cost than the sDrive30i?
The M40i starts at $61,900 compared to $46,900 for the sDrive30i. That is a $15,000 difference, or approximately $264/month more on a 60-month loan.
Do the 2024 BMW X3 sDrive30i and M40i have the same engine?
No. The sDrive30i uses a 2.0L I4 Turbo (248 hp, 258 lb-ft), while the M40i has the 3.0L I6 mild-hybrid Turbo (382 hp, 369 lb-ft). That is 134 more horsepower. Both pair with the same 8-speed shiftable automatic.
Does the 2024 X3 sDrive30i come with AWD?
No. The sDrive30i comes standard with RWD while the M40i has AWD. This affects traction, fuel economy, and curb weight.
Is the 2024 X3 sDrive30i or M40i 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 sDrive30i and M40i, 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 M40i worth $15,000 more than the sDrive30i?
The M40i changes both the engine and drivetrain for $15,000 more. That is a hardware upgrade, not just a feature bump.
Which 2024 BMW X3 trim gets better fuel economy, the sDrive30i or the M40i?
The sDrive30i is the more efficient of the two at 25 combined MPG, versus 23 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.
What $15,000 Gets You
At $15,000 more, the X3 M40i adds the 3.0L I6 mild-hybrid Turbo engine (+134 hp) and AWD. This is a situational call. If those features are on your must-have list, the upgrade makes sense. If not, the sDrive30i delivers the same core X3 experience for less.
sDrive30i vs. M40i: Day-to-Day
The M40i comes with the 3.0L I6 mild-hybrid Turbo instead of the sDrive30i's 2.0L I4 Turbo. That means 134 more horsepower and 111 more lb-ft of torque. You will notice it most when merging, passing, or climbing at speed. In return, expect about 2 fewer combined MPG. AWD on the M40i means better grip in bad weather. If you live somewhere with mild winters, the sDrive30i's RWD may be fine.
Fuel Economy Comparison
The X3 sDrive30i gets 2 more combined MPG. At $3.50/gallon and 12,000 miles/year, that saves roughly $146 per year or $730 over five years of ownership.
Summary
The X3 M40i costs $15,000 more than the sDrive30i (about $264/month more on a 60-month loan). That buys 6 meaningful changes at $2,500 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 sDrive30i
Value-trim add-onsThese picks fit the sDrive30i best when the goal is covering the daily-use gaps without paying up to the next trim.
BMW X3 M40i
Step-up trim add-onsThese picks suit the M40i 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 BMW or any dealership.
Page updated 2026-03-18. Verify equipment, pricing, and regional availability with the manufacturer or dealer.