A factory over-the-air software update will unlock rear-wheel oversteer on the M350 xDrive sometime during 2027.
BMW pulled the covers off the 2027 3 Series on September 29. Three trims. One of them does 3.9 seconds to 60 mph. The top variant, the M350 xDrive, carries 437 hp from a 3.0-litre inline-six — the highest output ever fitted to an M Performance 3 Series.
The launch matters because it is the first combustion 3 Series wearing BMW's Neue Klasse body language, already seen on the electric i3 revealed earlier in 2025. According to BMW AG's official product announcement, published September 2025, the M350 xDrive sits $16,000 above the base 330's $49,900 starting price — a wider spread than the previous generation's M340i premium of roughly $11,000. The move signals a deliberate split between the combustion and EV 3 Series lines.
What the Numbers Actually Say
Three engine variants, four figures worth comparing. The base 330 puts out 255 hp and 295 lb-ft from a turbocharged 2.0-litre four-cylinder. The M350 xDrive counters with 437 hp and 428 lb-ft from a 3.0-litre inline-six — a difference of 182 hp and 133 lb-ft. Sprint times: 5.9 seconds to 60 mph for the 330 and 330 xDrive, 3.9 seconds for the M350 xDrive. That is a 2.0-second gap, or 34 percent quicker by arithmetic (2.0 ÷ 5.9 = 0.339). Both are electronically limited to 155 mph. Pricing runs $49,900 for the 330, $51,900 for the 330 xDrive, and $65,900 for the M350 xDrive. The spread between base and M Performance trim — $16,000 — is the widest in the current 3 Series generation. The electric i3 50 opens at $61,500, sitting $4,400 below the M350 xDrive. All figures sourced from BMW AG's US market pricing sheet, September 2025. Follow wider coverage of BMW's combustion-to-electric transition in the BMW performance and EV transition tracker.
Neue Klasse Body, Real Grille Included
Engineers at BMW's Munich design studio carried the Neue Klasse shell directly from the i3 to the combustion 3 Series, then made three visible changes to tell the cars apart. First, a physical grille replaces the blanked panel on the i3. Second, optional yellow M lights slot into the headlight housing — a detail absent from any previous M Performance 3 Series. Third, quad exhausts emerge from the M350 xDrive's rear diffuser in place of the i3's smooth undercut. Flush door handles run the length of both cars. Wheel choices on the combustion car start at 19 inches, with 20-inch rims available as an option. The rear end is virtually identical between siblings: the same horizontal taillight strip spans both cars. M Sport buyers get model-specific front and rear bumpers, side skirts, and blue-painted brake callipers. Black exterior trim replaces the standard car's body-colour inserts on the M Performance variant.
Drift Moment: What BMW Actually Said
BMW's September 2025 product release describes the system as "Drift Moment" — a function that cuts drive to the front axle of the M350 xDrive, transferring torque rearward to allow controlled oversteer. The exact wording from the release: "available via software update to the car sometime in 2027." That phrasing is doing real work. It means buyers who spend $65,900 at launch will not have the feature their car is marketed around. BMW has deployed over-the-air unlocks before — the M5's Boost function arrived the same way — but Drift Moment marks the first time an M Performance model, as opposed to a full M car, ships with the capability reserved for a post-sale patch. Oliver Zipse, BMW AG's chief executive, has publicly linked OTA revenue generation to the company's software-first product direction, according to BMW AG's annual report for fiscal year 2024. Whether Drift Moment ultimately stays free or becomes a paid unlock has not been confirmed. That gap is the one the product launch document does not close. Compare this to BMW's four-motor M3, confirmed at 1,300 hp for 2027, where all performance features are present at launch.
M350 xDrive Against the Car It Replaced
The outgoing M340i xDrive — the top combustion 3 Series before this launch — produced 382 hp from the same S58-adjacent B58 inline-six architecture. The new M350 xDrive's 437 hp represents a 55 hp increase, or 14.4 percent more power (55 ÷ 382 = 0.144). Sprint time for the old M340i was 4.2 seconds to 60 mph; the M350 xDrive cuts that to 3.9 seconds. Neither car carried a factory drift function at any point during the outgoing generation. On interior screen size, the gap versus the previous generation is wider still: the old 3 Series ran a 12.3-inch iDrive display; the new car installs a 17.9-inch trapezoidal screen also found in the X5 and i7. The Panoramic iDrive system stretches across the base of the windshield, a format not present on any previous 3 Series. The outgoing car did not offer a TiVo-powered video application or an Amazon Alexa-integrated AI assistant. Mercedes-Benz's competing C 43 AMG produces 402 hp in its current form, meaning the M350 xDrive now holds a 35 hp advantage in the sports sedan segment without stepping up to full AMG 63 territory.
The Detail That Doesn't Quite Line Up
BMW dropped the "i" prefix from its combustion 3 Series lineup specifically to avoid confusion with the electric i3. Logical on paper. Yet the base electric model is called the i3 50, and it opens at $61,500 — $11,600 more than the combustion 330, but $4,400 less than the M350 xDrive. A buyer who wants maximum performance from a combustion 3 Series now spends more than they would on the entry-level electric model. The brand has not published a combined range figure for the M350 xDrive, nor has it confirmed whether the model qualifies for any federal clean-vehicle credit — it does not, as a combustion car, but the absence of any fuel economy guidance in the September 2025 release is unusual for a US market launch document. EPA fuel economy ratings for the M350 xDrive had not been filed with the US Environmental Protection Agency at the time of the product announcement. Neither had European WLTP consumption data appeared in BMW AG's press materials. For context on how regulatory filings interact with launch timing, the US truck tariff and European IVA tightening discussion illustrates how compliance windows increasingly compress launch schedules.
BMW has confirmed production will begin in Germany at the Munich plant, with US deliveries targeting the first quarter of 2027. Reservations for the electric i3 opened on September 29, 2025, the same day as the combustion reveal. The M350 xDrive is the first M Performance car — not a full M model — to be engineered with a drift function in the 3 Series' 50-year history. The complete BMW model history and specifications are catalogued in the Global Auto Index manufacturer database.
