BMW 4 Series trim comparison
2026 BMW 4 Series 430i xDrive vs M440i
The 4 Series 430i xDrive starts at $63,300 while the M440i is $67,100. That $3,800 gap buys 8 meaningful differences.
This is a powertrain and drivetrain change. The M440i gets the 3.0L I6 mild-hybrid Turbo and RWD, so the $3,800 is buying a different driving experience, not just nicer trim.
Choose the 430i xDrive if the 2.0L I4 mild-hybrid Turbo with AWD already covers the way you drive. Move to the M440i only when the 3.0L I6 mild-hybrid Turbo and RWD combo is the reason you are shopping higher, because that is the real hardware split here.
The cleanest way to feel this upgrade is through the payment: about $67/month more over 60 months, or roughly $4,020 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 430i xDrive and M440i share the same 8-speed shiftable automatic transmission and identical wheelbase and body dimensions.
The upgrade math
You are paying $3,800 for 7 measurable differences, which works out to about $543 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. 8 specification differences, 0 shared.
Full Specification Comparison
Specifications reflect available data as of early 2026. Confirm details with an authorized dealer before purchasing.
| Spec | 430i xDrive | M440i |
|---|---|---|
| Pricing | ||
| MSRP | $63,300 | $67,100 |
| 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 | RWD |
| Fuel Economy | ||
| City MPG | 24 | 27 |
| Highway MPG | 33 | 34 |
| Combined MPG | 28 | 30 |
| Fuel Tank | 15.6 gal | 15.5 gal |
| Dimensions | ||
| Curb Weight | 4,145 lbs | 3,896 lbs |
| Wheelbase | 112.2" | 112.2" |
| Length | 187.9" | 187.9" |
| Width | 72.9" | 72.9" |
| Height | 54.9" | 54.6" |
| 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 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 cost than the 430i xDrive?
The M440i starts at $67,100 compared to $63,300 for the 430i xDrive. That is a $3,800 difference, or approximately $67/month more on a 60-month loan.
Do the 2026 BMW 4 Series 430i xDrive and M440i have the same engine?
No. The 430i xDrive uses a 2.0L I4 mild-hybrid Turbo (255 hp, 295 lb-ft), while the M440i 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.
Does the 2026 4 Series 430i xDrive come with RWD?
No. The 430i xDrive comes standard with AWD while the M440i has RWD. This affects traction, fuel economy, and curb weight.
What warranty does the 2026 BMW 4 Series come with?
All 2026 BMW 4 Series trims, including both the 430i xDrive and M440i, 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 worth $3,800 more than the 430i xDrive?
The M440i changes both the engine and drivetrain for $3,800 more. That is a hardware upgrade, not just a feature bump.
Which 2026 BMW 4 Series trim gets better fuel economy, the 430i xDrive or the M440i?
The M440i is the more efficient of the two at 30 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.
Is the 4 Series M440i Worth $3,800 More?
Spending $3,800 more on the 4 Series M440i buys the 3.0L I6 mild-hybrid Turbo engine (+131 hp) and RWD. These are the kind of differences you notice every time you drive.
The Differences You'll Notice Most
Engine changes between these trims: the 430i xDrive has the 2.0L I4 mild-hybrid Turbo, the M440i the 3.0L I6 mild-hybrid Turbo. That means 131 more horsepower and 103 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 M440i drops to RWD from the 430i xDrive's AWD. Less traction capability, but potentially better fuel economy.
Fuel Economy Comparison
The 4 Series M440i gets 2 more combined MPG. At $3.50/gallon and 12,000 miles/year, that saves roughly $100 per year or $500 over five years of ownership.
Bottom Line
$3,800 more for the 4 Series M440i gets you 7 real differences. At $67/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.
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
Step-up trim add-onsThese picks suit the M440i 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.