The quad exhaust signals performance even if the horsepower stays the same.
From the transport trailers of Bavaria to the roads of the near future, BMW's fourth-generation X3 emerges from camouflage as a quiet declaration of intent — that performance, electrification, and identity need not collapse into one another. The G45 prototype, spotted with production-ready M Performance styling and quad exhaust tips, signals that a storied compact crossover lineage is preparing its next chapter. What makes this moment philosophically interesting is not merely the hardware, but BMW's deliberate choice to let combustion and electric versions diverge in form and soul, rather than forcing them to share a face.
- Spy photos have effectively ended the mystery — the next X3 M50i is wearing its final skin, and the quad exhaust tips leave little room for speculation about its performance ambitions.
- The prototype's larger footprint and dual-screen iDrive interior signal a wholesale reinvention, not a refresh, putting pressure on rivals in the compact luxury crossover segment.
- BMW is threading a careful needle: dropping the 'i' suffix from gasoline models while preparing a fully electric iX3 on an entirely separate Neue Klasse platform, a move that risks confusing loyal buyers but promises cleaner brand architecture.
- An early 2024 reveal — possibly as soon as January — is the working timeline, with the Neue Klasse iX3 following in 2025 to complete the generational overhaul.
- The most likely powertrain, a 3.0-liter inline-six with 48V mild-hybrid assist, keeps the M50i badge credible without committing to the full electrification that defines the brand's longer horizon.
BMW's next X3 is no longer a secret worth keeping. A G45 prototype, caught on a transport trailer between test sessions, shed enough of its camouflage to reveal what the fourth generation of Bavaria's most popular compact crossover will look like — and the quad exhaust tips made the most important statement. BMW has been fitting four exhaust outlets to its M Performance variants since the X1 M35i, and the X3 is now receiving the same treatment, almost certainly destined for an X3 M50i badge.
The prototype appears to wear its final production body and headlights, with large two-tone wheels and red brake calipers reinforcing its performance character. The new X3 is visibly larger than its predecessor — a deliberate move to widen the gap between it and the growing X1. Inside, the dual-screen iDrive setup continues BMW's steady retreat from physical buttons toward a touchscreen-dominant dashboard.
On powertrain, the most plausible scenario mirrors what happened when the larger X5, X6, and X7 transitioned from M50i to M60i: a 3.0-liter inline-six paired with a 48-volt mild-hybrid system. BMW is also planning nomenclature changes across the lineup, dropping the 'i' suffix from gasoline models while retaining 'd' for diesels, alongside a continued plug-in hybrid option.
The most consequential shift, however, is still a year away. Rather than adapting the existing platform for electrification, BMW is building a fully electric iX3 on its new Neue Klasse architecture — a decision that will finally give the electric and combustion versions distinct visual identities. The new X3 is expected in early 2024, with the Neue Klasse iX3 following in 2025, closing out a generational renewal that touches nearly every dimension of the model.
BMW's next X3 is coming, and the company isn't bothering to hide it anymore. A prototype of the fourth-generation model—internally called the G45—was recently spotted on a transport trailer between test sessions, and what emerged from under the camouflage tells us plenty about what Bavaria has in store for its hugely successful compact luxury crossover. This isn't just any X3. The quad exhaust tips are the giveaway. BMW has begun fitting four exhaust outlets to its M Performance variants, a move that started with the smaller X1 M35i, and now the X3 is getting the same treatment.
The prototype carries what appears to be the final production body and headlights, suggesting the reveal isn't far off. The large two-tone wheels wrapped around red brake calipers reinforce that this is an M Performance model, one that will likely wear the X3 M50i badge when it reaches showrooms. The new X3 looks noticeably larger than the current generation, which makes sense given that BMW's latest X1 has grown to 4.5 meters long. The company seems intent on widening the size gap between its two smallest crossovers, and the X3 will reclaim its position as the bigger sibling.
Inside, the spy photos hint at the dual-screen iDrive setup that BMW has rolled out across its lineup. This means a cleaner dashboard with far fewer physical buttons, as the company continues its push to move most controls into the touchscreen interface. The specifics of what will power the M50i remain unclear, though there are clues. When BMW's larger SUVs—the X5, X6, and X7—made the jump from M50i to M60i badging, they kept their V8 engines but added mild-hybrid technology. If the X3 follows a similar path, expect a 3.0-liter inline-six paired with a 48-volt mild-hybrid system. Nothing is confirmed yet, but that's the most likely scenario.
Beyond the M Performance variant, BMW is planning broader changes to the X3 lineup. The company intends to drop the "i" designation from gasoline models while keeping the "d" for diesels—a nomenclature shift that will simplify the naming structure. A plug-in hybrid version will continue to be offered, maintaining the X3's position as a flexible platform for different powertrains. The truly significant change, however, is coming with the electric X3. Rather than adapting the existing platform, BMW is developing a fully electric iX3 based on its new Neue Klasse architecture. This bespoke EV platform will allow for distinct design language between the electric and combustion-engine versions, a departure from today's approach where the models look nearly identical regardless of what sits beneath the hood.
The timeline is becoming clearer. BMW will introduce the second-generation X2 and iX2 at the end of this year, followed by the new X3 in early 2024—possibly as soon as January, according to insider reports from BMW enthusiast forums. The Neue Klasse-based iX3 will arrive later in 2025, completing the generational refresh of BMW's compact crossover family. For now, the G45 X3 M50i remains in testing, but those quad exhaust tips are a signal that the wraps are coming off soon.
Notable Quotes
BMW is dropping the 'i' from gasoline model names while keeping 'd' for diesels, simplifying the nomenclature structure— BMW's naming strategy for the next-generation X3
The Hearth Conversation Another angle on the story
Why does BMW bother with spy photos at this point? The prototype is clearly in final form.
It's not really about hiding anymore—it's about controlling the narrative. These photos get out, enthusiasts start analyzing them, and by the time the official reveal happens, there's already momentum and conversation built in.
The quad exhaust is interesting. Why add four tips to an M Performance model that might not get more power?
It's visual language. The quad exhaust signals performance and aggression even if the horsepower stays the same. It's what customers expect to see on an M car, and BMW knows that.
So the X3 M50i might have the same output as the current model?
That's the pattern with the larger SUVs. When they went from M50i to M60i, the power didn't change—just the mild-hybrid system got added. The X3 will probably follow that same logic.
What's the bigger story here—the new X3 itself, or the electric iX3 coming in 2025?
Both matter, but the iX3 is the real shift. By putting it on a completely different platform, BMW is finally admitting that electric cars need their own design language. The combustion and electric versions won't look like twins anymore.
Does that mean the current iX3 is already outdated?
Essentially, yes. It's an adaptation of an old platform. Once the Neue Klasse iX3 arrives, the current one becomes the previous generation almost immediately.