BMW M350 vs BMW i3 50 xDrive: Which 3 Series Makes More Sense?

The BMW M350 vs BMW i3 50 xDrive comparison comes with a useful twist: the electric car has more power, but the petrol car gets to 100km/h sooner. That gives buyers something more interesting to think about than a simple contest between old technology and new.

These are two different answers to the same everyday question: what should a modern BMW sports sedan feel like? The M350 xDrive centres its appeal on a turbocharged straight-six. The i3 50 xDrive makes its case through electric performance and long-distance capability. Both belong to the new 3 Series family outlined in BMW’s September 2026 announcement.

This is a comparison of announced specifications and ownership considerations, rather than a road test. Here, BMW i3 refers to the new fully electric 3 Series sedan. Figures and equipment can differ by market.

BMW M350 vs i3 50 xDrive: the key specifications

Specification	BMW M350 xDrive	BMW i3 50 xDrive
Powertrain	3.0-litre turbo inline-six with 48V mild hybrid	Dual-motor electric
Drive	All-wheel drive	All-wheel drive
System power	326kW	345kW
System torque	580Nm	645Nm
Claimed 0–100km/h	4.1 seconds	4.7 seconds
Top speed	250km/h, electronically limited	200km/h
EV traction battery capacity	Not applicable (48V mild hybrid)	108.7kWh
Maximum electric range (WLTP)	Not applicable	Up to 912km
Peak DC charging	Not applicable	Up to 400kW

Performance: the M350 is quicker, despite having less power

Using BMW’s claimed figures, the M350 reaches 100km/h 0.6 seconds sooner, while the i3 offers 19kW more power and 65Nm more torque. Those numbers underline why peak output alone cannot tell you how a car accelerates. They also cannot settle which one will be more rewarding through a favourite sequence of bends.

For an enthusiast, the petrol car’s attraction is likely to involve the engine’s response, sound and the rhythm of working through gears. The electric alternative offers a different kind of appeal: fewer interruptions to acceleration and the convenience of an electric drivetrain. Those are reasons to try both, rather than declare a winner from a spreadsheet.

Chassis hardware and control software add another layer. BMW fits the M350 with Adaptive M suspension as standard in its global specification, while the i3 uses the Heart of Joy computer to coordinate drive and driving dynamics. BMW also plans to introduce the M350’s rear-wheel-drive Drift Moment function during 2027 through a software update. These details are explained in BMW Group’s overview of the new 3 Series.

Our take: the M350 has the stronger paper argument for buyers chasing the quicker standing-start sprint and the familiar pleasures of a six-cylinder BMW. A meaningful verdict on steering, ride quality and cornering balance will still need time behind the wheel.

Range and charging: the i3’s biggest ownership advantage

BMW quotes up to 912km of WLTP range for the i3 50 xDrive, alongside an 800V electrical architecture and peak DC charging of up to 400kW. Under the specified test conditions, a ten-minute charging stop can add up to 423km of WLTP-equivalent range. These are manufacturer maximums, rather than a promise for every journey.

Actual range varies with speed, weather, tyres, load and climate-control use. Charging also depends on the charger, battery temperature and state of charge. The ten-minute figure describes energy added under favourable conditions; it is not a full recharge time.

For someone who can charge at home, the ownership appeal could be substantial. Starting an ordinary day with the car already charged changes the routine: energy can be added while the car is parked, instead of requiring a separate fuel stop. That convenience may matter more than either car’s acceleration claim.

If you depend on public charging, assess the places where you actually park and the routes you regularly drive. A large headline range does not remove the need for suitable chargers. The M350’s petrol refuelling routine may better suit buyers whose travel plans change frequently or whose overnight parking makes charging difficult.

Interior and technology: petrol buyers still get the new cockpit

Choosing the M350 does not mean staying with the previous dashboard. Both cars adopt BMW Panoramic iDrive and Operating System X. BMW’s global release specifies a 17.9-inch central display, with Panoramic Vision putting information along the base of the windscreen. The 3D head-up display is listed as optional in that global announcement.

The M350 also brings its own M Performance cabin treatment, with a driver-oriented layout and sporting details described on BMW Australia’s M models page. Check the Australian specification for the exact car being ordered, particularly when comparing standard equipment with overseas photography.

The useful test here is personal. Can you change the settings you use most without hunting through menus? Is the information easy to read from your normal driving position? A striking cockpit photograph is a good starting point, but a dealership demonstration should tell you much more about living with the interface.

Design and daily use: which character fits your driving?

From the outside, this is a choice within the same modern BMW design family. The launch photographs show a shared approach to the grille, light layout and sedan proportions. The M350 adds a more overt M Performance identity: BMW highlights its yellow light signature and four exhaust outlets on the official M models page.

Our visual take is that the M350 makes its performance intent more obvious, while the i3 lets the new body shape carry more of the message. Neither asks buyers to choose a radically different-looking car simply because they want a different drivetrain.

Daily use creates a clearer split than appearance. The better match depends on where the car spends its time and what makes a drive enjoyable to you. These are the practical questions we would put beside the specification sheet:

Comparison	BMW M350 xDrive	BMW i3 50 xDrive
Everyday routine	Refuel when needed; convenient for changing travel plans	Charge while parked where a suitable connection is available
Enthusiast appeal	Six-cylinder response, engine sound and gear changes	Electric power delivery and fewer interruptions to acceleration
Key ownership question	Does petrol refuelling fit your regular routes?	Can you charge reliably at home, work or regular destinations?
What to test in person	Ride, steering response and engine character	Ride, steering response and regenerative-braking feel

For a predictable commute with convenient charging, the i3’s routine could fit neatly around time the car already spends parked. For frequent unplanned trips, the M350’s familiar refuelling process may be easier to accommodate. Before choosing, map a normal week of driving and then a genuinely demanding trip; those two scenarios often reveal different priorities.

Which new BMW 3 Series would we shortlist?

Shortlist the M350 xDrive if the engine is a central part of why you want a BMW, you value its quicker claimed sprint, or your parking and travel habits make petrol refuelling more practical. Its appeal is easiest to understand when the driving experience itself is the purchase priority.

Shortlist the i3 50 xDrive if you can charge conveniently and want electric motoring without making the car’s design or cabin technology the deciding compromise. Your own charging arrangements still deserve careful attention.

For our provisional TDP pick, the i3 50 xDrive looks the more persuasive everyday proposition for a buyer with reliable home charging. The M350 is the one we would keep on the list for its engine character and performance focus. A back-to-back drive could easily shift that judgement; neither a power figure nor a range claim can answer how each car feels.

For more background on the petrol model, read TDP’s earlier look at the M350 xDrive.

BMW M350 vs BMW i3 50 xDrive: FAQs

Which car has the faster claimed 0–100km/h time?

BMW quotes 4.1 seconds for the M350 xDrive and 4.7 seconds for the i3 50 xDrive. The M350 is therefore quicker by 0.6 seconds on the manufacturer’s figures.

How far can the BMW i3 50 xDrive travel?

Its maximum stated range is 912km under WLTP testing. Real-world range will vary with conditions, equipment and driving style.

Is the BMW M350 xDrive fully electric?

No. It combines a petrol six-cylinder engine with 48V mild-hybrid assistance. The i3 50 xDrive is the fully electric car in this comparison.

Which model suits regular commuting?

The i3 50 xDrive is worth considering if you have reliable charging where you regularly park. The M350 xDrive may suit drivers who prefer petrol refuelling or place greater value on the character of a six-cylinder engine. Your own routine should decide the shortlist.

Editorial comparison prepared 7 October 2026. Specifications are manufacturer claims and may vary by market. Photography: Fabian Kirchbauer / BMW Group. Overseas vehicles shown; local specification may vary.