Yes, you read that correctly. Mercedes-Benz, one of the most iconic German carmakers, is reportedly in talks to source engines from none other than BMW—its longtime rival.
It may sound like an unlikely partnership, but in today’s fast-changing automotive world, it’s more practical than it is surprising.
What’s Actually Happening?
According to reports, Mercedes is in advanced discussions to use BMW’s 2.0-liter turbocharged four-cylinder petrol engine—known internally as the B48—in several of its future models.
This is the same engine currently used across a range of BMWs, including the 3 Series and X1, as well as MINI models. It’s well-regarded for its performance and efficiency, but most importantly, it already complies with upcoming Euro 7 emissions regulations.
Why Would Mercedes Do This?
There are several strategic reasons for Mercedes to consider this move:
- Cost Efficiency: Developing a new combustion engine from scratch is expensive, especially when resources are being shifted toward electric vehicle development. Buying an existing, proven engine is simply more cost-effective.
- Regulatory Pressure: Emissions regulations are tightening in Europe. BMW’s B48 engine is already certified for the upcoming Euro 7 standards, giving Mercedes a ready-made solution at a time when its own M252 engine may not be up to the task.
- Hybrid Compatibility: The B48 engine is versatile. It can be integrated into plug-in hybrid systems and potentially even range-extended electric models—something that’s increasingly important for compliance and customer expectations.
Which Mercedes Models Could Be Affected?
If the deal moves forward, expect to see this BMW engine powering several Mercedes models by around 2027, including:
- GLA and GLB (compact SUVs)
- CLA and C-Class (sedans)
- E-Class
- GLC
- The rumored new entry-level “Baby G-Wagen”
This wouldn’t just be a one-off engine swap—it could signal a deeper technical collaboration across multiple vehicle platforms.
Where Will the Engines Come From?
BMW would likely produce the engines at its plant in Steyr, Austria, which currently manufactures over one million engines per year. There’s also talk of a possible shared production facility in the United States, which would help both brands avoid high tariffs and supply chain bottlenecks.
From Rivals to Collaborators?
While this kind of collaboration might have been unthinkable a decade ago, the automotive landscape has changed. Shared platforms, joint ventures, and supplier partnerships are now common—even among rivals.
In this case, both Mercedes and BMW are looking for ways to remain competitive as the internal combustion engine nears the end of its regulatory life in Europe. Working together, at least in the short term, makes good business sense.
Final Thoughts
If this deal goes through, it will mark a significant moment in modern automotive history. Two of Germany’s most respected carmakers—often seen as opposites in engineering philosophy—might soon share technology under the hood.
For drivers, the bottom line is simple: if the engine performs well, meets emissions standards, and supports future hybrid systems, most won’t mind where it comes from.
The industry is evolving, and so are the old rules about rivalry.
