BMW 4 Series trim comparison
2026 BMW 4 Series 430i xDrive vs M440i xDrive
The 4 Series 430i xDrive starts at $63,300 while the M440i xDrive is $69,100. That $5,800 gap buys 7 meaningful differences.
This trim jump changes the engine from 2.0L I4 mild-hybrid Turbo to 3.0L I6 mild-hybrid Turbo. Everything else is secondary to whether that powertrain difference matters for how you drive.
If you would notice the 3.0L I6 mild-hybrid Turbo every week, the M440i xDrive makes sense. If not, the 430i xDrive is the cleaner stop because this jump matters for the powertrain first and the trim badge second.
If you are budgeting this move monthly, the jump from the 430i xDrive to the M440i xDrive is about $102/month on a 60-month loan at 6.5% APR with 10% down. That works out to roughly $6,120 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 430i xDrive and M440i xDrive 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 $5,800 for 6 measurable differences, which works out to about $967 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, 1 shared.
Full Specification Comparison
Specifications reflect available data as of early 2026. Confirm details with an authorized dealer before purchasing.
| Spec | 430i xDrive | M440i xDrive |
|---|---|---|
| Pricing | ||
| MSRP | $63,300 | $69,100 |
| Powertrain | ||
| Engine | 2.0L I4 mild-hybrid Turbo | 3.0L I6 mild-hybrid Turbo |
| Horsepower | 255 hp | 386 hp |
| Torque | 295 lb-ft | 398 lb-ft |
| Transmission | 8-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain | AWD | AWD |
| Fuel Economy | ||
| City MPG | 24 | 26 |
| Highway MPG | 33 | 33 |
| Combined MPG | 28 | 29 |
| Fuel Tank | 15.6 gal | 15.5 gal |
| Dimensions | ||
| Curb Weight | 4,145 lbs | 4,019 lbs |
| Wheelbase | 112.2" | 112.2" |
| Length | 187.9" | 187.9" |
| Width | 72.9" | 72.9" |
| Height | 54.9" | 54.8" |
| 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.
2026 BMW 4 Series 430i xDrive vs M440i xDrive Questions Shoppers Ask
Use this page for the direct trim answer, then zoom back out to the BMW 4 Series lineup, the BMW brand hub, the Compact Cars, 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 4 Series M440i xDrive cost than the 430i xDrive?
The M440i xDrive starts at $69,100 compared to $63,300 for the 430i xDrive. That is a $5,800 difference, or approximately $102/month more on a 60-month loan.
Do the 2026 BMW 4 Series 430i xDrive and M440i xDrive have the same engine?
No. The 430i xDrive uses a 2.0L I4 mild-hybrid Turbo (255 hp, 295 lb-ft), while the M440i xDrive has the 3.0L I6 mild-hybrid Turbo (386 hp, 398 lb-ft). That is 131 more horsepower. Both pair with the same 8-speed shiftable automatic.
Do the 2026 4 Series 430i xDrive and M440i xDrive have the same drivetrain?
Yes. Both come with AWD as standard. The differences between these trims are in features and equipment, not drivetrain.
What warranty does the 2026 BMW 4 Series come with?
All 2026 BMW 4 Series trims, including both the 430i xDrive and M440i xDrive, 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 2026 BMW 4 Series M440i xDrive worth $5,800 more than the 430i xDrive?
The $5,800 buys the 3.0L I6 mild-hybrid Turbo. If that powertrain matters for how you drive, yes. If not, the 430i xDrive does the same job for less.
Which 2026 BMW 4 Series trim gets better fuel economy, the 430i xDrive or the M440i xDrive?
The M440i xDrive is the more efficient of the two at 29 combined MPG, versus 28 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 $5,800 Gets You
The 4 Series M440i xDrive is a clear upgrade over the 430i xDrive. The $5,800 price increase gets you the 3.0L I6 mild-hybrid Turbo engine (+131 hp) -- real functional changes, not just cosmetics.
430i xDrive vs. M440i xDrive: Day-to-Day
The M440i xDrive comes with the 3.0L I6 mild-hybrid Turbo instead of the 430i xDrive's 2.0L I4 mild-hybrid Turbo. That means 131 more horsepower and 103 more lb-ft of torque. You will notice it most when merging, passing, or climbing at speed.
Fuel Economy Comparison
The 4 Series M440i xDrive gets 1 more combined MPG. At $3.50/gallon and 12,000 miles/year, that saves roughly $52 per year or $260 over five years of ownership.
Summary
The 4 Series M440i xDrive costs $5,800 more than the 430i xDrive (about $102/month more on a 60-month loan). That buys 6 meaningful changes at $967 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 4 Series 430i xDrive
Value-trim add-onsThese picks fit the 430i xDrive best when the goal is covering the daily-use gaps without paying up to the next trim.
BMW 4 Series M440i xDrive
Step-up trim add-onsThese picks suit the M440i xDrive 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 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 BMW or any dealership.
Page updated 2026-03-18. Verify equipment, pricing, and regional availability with the manufacturer or dealer.