BMW 3 Series trim comparison
2024 BMW 3 Series 330i xDrive vs M3 CS
The 3 Series 330i xDrive starts at $46,500 while the M3 CS is $118,700. That $72,200 gap buys 6 meaningful differences.
This trim jump changes the engine from 2.0L I4 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 M3 CS makes sense. If not, the 330i xDrive is the cleaner stop because this jump matters for the powertrain first and the trim badge second.
Think about this as a monthly tradeoff, not just a sticker gap. The M3 CS adds about $1271/month on a typical 60-month loan, or around $76,260 more overall with interest. 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
Same platform and drivetrain options on both trims.
The upgrade math
You are paying $72,200 for 5 measurable differences, which works out to about $14,440 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 | 330i xDrive | M3 CS |
|---|---|---|
| Pricing | ||
| MSRP | $46,500 | $118,700 |
| Powertrain | ||
| Engine | 2.0L I4 Turbo | 3.0L I6 Turbo |
| Horsepower | 255 hp | 543 hp |
| Torque | 295 lb-ft | 479 lb-ft |
| Transmission | 8-speed shiftable automatic | 8-speed automatic |
| Drivetrain | AWD | AWD |
| Fuel Economy | ||
| City MPG | 24 | 15 |
| Highway MPG | 33 | 22 |
| Combined MPG | 27 | 18 |
| Fuel Tank | 15.6 gal | 15.6 gal |
| Dimensions | ||
| Curb Weight | 3,671 lbs | 3,915 lbs |
| Wheelbase | 112.2" | 112.5" |
| Length | 185.9" | 188.8" |
| Width | 71.9" | 75.5" |
| Height | 57.0" | 56.6" |
| 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.
2024 BMW 3 Series 330i xDrive vs M3 CS Questions Shoppers Ask
Use this page for the direct trim answer, then zoom back out to the BMW 3 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 2024 3 Series M3 CS cost than the 330i xDrive?
The M3 CS starts at $118,700 compared to $46,500 for the 330i xDrive. That is a $72,200 difference, or approximately $1271/month more on a 60-month loan.
Do the 2024 BMW 3 Series 330i xDrive and M3 CS have the same engine?
No. The 330i xDrive uses a 2.0L I4 Turbo (255 hp, 295 lb-ft), while the M3 CS has the 3.0L I6 Turbo (543 hp, 479 lb-ft). That is 288 more horsepower. Both pair with the same 8-speed shiftable automatic.
Do the 2024 3 Series 330i xDrive and M3 CS 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 2024 BMW 3 Series come with?
All 2024 BMW 3 Series trims, including both the 330i xDrive and M3 CS, 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 3 Series M3 CS worth $72,200 more than the 330i xDrive?
The $72,200 buys the 3.0L I6 Turbo. If that powertrain matters for how you drive, yes. If not, the 330i xDrive does the same job for less.
Which 2024 BMW 3 Series trim gets better fuel economy, the 330i xDrive or the M3 CS?
The 330i xDrive is the more efficient of the two at 27 combined MPG, versus 18 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.
Breaking Down the $72,200 Gap
Same drivetrain, $72,200 more. The 3 Series M3 CS adds minor equipment upgrades over the 330i xDrive, but the core driving experience is identical.
How the 330i xDrive and M3 CS Feel Different
Moving from the 330i xDrive to the M3 CS means a different engine entirely. That means 288 more horsepower and 184 more lb-ft of torque. You will notice it most when merging, passing, or climbing at speed. In return, expect about 9 fewer combined MPG.
Fuel Economy Comparison
The 3 Series 330i xDrive gets 9 more combined MPG. At $3.50/gallon and 12,000 miles/year, that saves roughly $777 per year or $3,885 over five years of ownership.
The Short Version
The 3 Series M3 CS costs $72,200 more than the 330i xDrive (about $1,271/month more on a 60-month loan). That buys 5 meaningful changes at $14,440 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 3 Series 330i xDrive
Value-trim add-onsThese picks fit the 330i xDrive best when the goal is covering the daily-use gaps without paying up to the next trim.
BMW 3 Series M3 CS
Step-up trim add-onsThese picks suit the M3 CS 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.