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When mentioingn the BMW M3 in any conversation, you quickly realize that many see it as the poster child for performance cars. It’s loud and fast, and the one that most enthusiasts want. Below it in the 3 Series lineup is the 2025 BMW M340i. It doesn’t shout its intention as loudly as the M3, but it still packs a serious punch when backed into a corner.

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While the M340i is not trying to step on the M3’s toes, it gets very close to doing so, especially when you consider that it shares many of its components with said poster child. So, now we ask: Do you really need an M3, or is the new BMW M340i the smarter, more sensible buy?

What is the BMW M340i?

More Than Just A Style Package

Off the bat, it’s no secret that the BMW M340i is the final step before venturing into full-blown M3 territory. It gives you the practicality and usability of the standard 3 Series with the added benefit of M3-rivaling performance in a package that is a lot more livable than the hardcore sports sedan. But before we get too deep into the M340i, we must first glance over its roots.

Before being rebranded to the M340i in 2016, the car made its debut in America during the E90 3 Series’ run (2006–2011) as the 335i. The car, with its twin-turbo technology, was powered by the (N54) 3.0-liter inline six-cylinder gas engine. It set out to chang everyone’s perception of what a non-M 3 Series could be, and on many fronts, it succeeded. Almost from the word go, the car became a hit among enthusiasts.

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The new F30 generation 3 Series arrived in the USA in 2012, and the 335i continued with the N54 engine. But in 2016, with the range’s facelift, the N54 was replaced by the N55 version that featured a single twin-scroll turbocharger. This also meant the 335i’s rebranding to 340i. The biggest change in this prelude to the M3 came in 2019 with the launch of the G20 3 Series in 2019. Suddenly, the 340i received the M prefix and would be known as the M340i. The meaning was simple: to signify that this was indeed now an M Performance car, something more than the regular 3 Series and vastly better than its forebears. Still, it wasn’t on the M3’s level just yet, but it closed the gap significantly.

Items that made the M340i a notable addition to BMW’s portfolio:

• Turbocharged 3.0L inline-six
• xDrive (all-wheel-drive)
• M Sport differential
• Adaptive suspension
• Upgraded brakes

Why the M340i Is The Smarter Choice Over The M3

Performance Meets Livability

Okay, now before anyone gets up in arms over this potentially controversial subhead, hear us out. The M340i is a very intentional vehicle, be it in rear-wheel-drive (RWD) or xDrive guise. It’s designed with the intent of showing what an M3 can do without foregoing the performance DNA instilled in every M car. Only here, the M340i gives all of the thrills without any compromise.

The powertrain is another reason why it’s a smart buy. The B58 engine used here is a six-cylinder turbocharged unit that is geared more towards everyday use without the need for constant high-performance. The S58 in the M3, which is a more powerful and track-focused version of the B58, is a lot more intense and loves living on the edge.

Overall, the “baby M3” is more usable in almost every situation; the chassis is compliant and a lot more forgiving than the M3’s, and the M340i’s cabin is quieter and easier to live with. This is why we believe that the M340i is the ideal and most sensible precursor to an M3. It’s a grown-up, mature choice that does not push fun to the side. But this is the reasoning in a nutshell; there’s more to unpack.

M340i: Visual Cues That Give Off ‘M Car’ Vibes

Style Is As Important As Substance

A great trick the BMW M340i holds is its ability to not only feel like an M car – albeit on a slightly lesser level – but to look the part, too. The M340i comes standard with the M Sport package, which brings aggressive bumpers, larger air intakes, and a gloss-black rear diffuser to the conversation. These details are influenced by the M3, but are toned down just enough for the two cars not to be mistaken for each other. Of course, the BMW M340i dimensions are not as pronounced as the M3’s, meaning no wide front and rear tracks, no flared wheel arches, and no quad exhaust tips.

The 19-inch M alloy wheels with double-spoke design come standard, but BMW offers Individual wheels for that touch of differentiation. The signature M rear spoiler, the Shadowline accents, and red brake calipers are nods to the German automaker’s M division.

The M340i colors include two new ones for 2025: Arctic Race Blue and Vegas Red metallics.

BMW M340i: M Performance Interior Warrants Respect

A Thoroughbred German Luxury Car

While the M340i does not go full M like big bro the M3, there are plenty of cues to show that this is a performance-ready saloon. Especially on the inside. The most notable item is the three-spoke, flat-bottomed M Sport steering wheel, which is 1) standard on the BMW M340i and 2) has a red top-center marker. Anyone say M3 vibes? Behind the steering wheel are a set of paddle shifters to change gears manually. Connecting you to the steering wheel are the very supportive sports seats. Lateral support is ample when the road twists a bit more than normal, yet they are comfortable enough for daily driving.

In terms of infotainment, the M340i runs on BMW’s latest iDrive 8.5 software, housed in the BMW Curved Display that stretches across the dashboard. Operating it is an intuitive affair: user inputs are easy, and the displays are customizable. And when you want to, drivers can call up sport-specific menus. Admittedly, the M3-specific graphics are sorely missed, but the M340i’s interface is still very clean and modern.

Optional extras to elevate the BMW M340i specs to near-M levels:

• M Carbon Fibre interior trim
• M Alcantara steering wheel
• Sensatec dashboard with contrast stitching
• Galvanic controls for a premium metal feel
• BMW Head-up Display
• Adaptive M Suspension with configurable drive modes
• Harman Kardon surround sound system

BMW M340i Powertrains & Performance

The Differences Between M340i & M3 Are Not That Severe

When it comes to performance, both the BMW M340i and its M3 sibling are potent machines. Obviously, the M3 is the more extreme of the two, but the M340i isn’t far behind. And that’s worth exploring, because the M340i engine can hold its own without being – or feeling – overbearing.

BMW’s lauded B58 3.0L engine powers the 2025 M340i, offering 386 horsepower and 398 lb-feet of torque. Like the M3, an eight-speed Steptronic Sport transmission sends power to either the rear wheels or all four corners, depending on what you specify. And with xDrive, the 0-60 mph sprint is cleared in 4.1 seconds. This matches the base M3 off the line, which is hugely justified: the quickest model should not tread too close to the sun.

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The M3 uses a different iteration of BMW’s B58 engine, named the S58. In Competition xDrive trim, it sends a whopping 523 hp and 479 lb-ft to all four wheels, launching the M3 from 0-60 mph in a blistering 3.4 seconds. The xDrive system is rear-biased, with selectable driving modes, and can be set to full-on rear-wheel drive for that classic M car experience. Expectedly, the M3 is a far more explosive car, as it should be. It’s built for that.

As great as these figures are, there are different perspectives on each car. While the M3 constantly feels ready to pounce, the BMW M340i delivers its performance in a less demanding way. And by extension, a more accessible way. It’s a car happy to cruise along peacefully as much as it loves clearing its throat on the open road. Unlike the M3, you don’t have the constant sense of needing to be “on it” to enjoy it, and that makes the experience much easier in day-to-day situations.

BMW M340i: Price & Conclusion

BMW M340i Gets The Nod

When you compare the BMW M340i range to the M3 lineup when it comes to price, you’ll quickly notice the premium the M3 demands. And when money becomes a factor, then the M340i’s MSRP really stands out as the smarter choice for many.

• M340i Sedan: $60,200
• M340i xDrive Sedan: $62,200
• M3 Sedan: $76,700
• M3 Competition Sedan: $80,900
• M3 Competition xDrive Sedan: $86,000

For the most part, the BMW M340i will be all the M3 you’ll ever need. And for a lot less money, too! Acceleration is still brisk. The drivetrain is available in either RWD or AWD. And the chassis, with M Sport suspension, turns the car into a road-munching machine. All the while, it’s easier to live with, in part thanks to the tech-filled interior.

And that’s about it. The M3 is a brilliant car. No, it’s phenomenal! It’s raw, fast, and tuned for the maximum of everything. It pushes the limits and the envelope, and it makes sense. But not everyone will chase that. And because the majority of us will not drive at the edge every time, you quickly realize that the BMW M340i hits the mark more than well enough. It’s beyond just a stepping stone to the M3. It’s the sweet spot.

Sources: BMW