BMW's M cars are not what we'd call featherweights. Sure, the big, bruising twin-turbocharged V8s deliver a lot of power, but the fact of the matter is that more weight often equates to less fun.

Which is why we're so excited over a recent sit-down the blokes at Top Gear had with BMW's product manager for small and medium cars, Matt Collins. The chat led to talk of the M3 Coupe replacing M4. Collins confirmed that, yes, the new M4 would be turbocharged. The new engine will also be a six-cylinder, which should make purists happy.

"What we'd like is more focus on lightweight engineering." -Matt Collins

But what really peaked our interest was the talk of weight savings for the M4. Collins told Top Gear, "What we'd like is more focus on lightweight engineering." It gets better, TG also reports Collins as saying, "The philosophy will be around delivering performance through improved use of materials - lightweight alloys, lots of carbon fibre etc - rather than simply trying to make the engine more powerful to move the same kind of car, or scaling it back too far so that it loses its M3 roots." This left us smiling.

Citing the experience gleaned from the i3 and i8 projects, including the use of carbon fiber, lead to talk of a lightweight, hardcore M4 - a car that could, perhaps, wear the letters C, S and L on the back. Collins followed the party line, though, stating in the interview, "There are no plans at the moment to build a lightweight CSL version of the M4, but there weren't any plans to do the last-generation CSL either. We have to see what the customers think, and if there's potential for an even more lightweight version, we'll do it."

As for availability, Collins indicated that BMW's past schedule of bringing out an M variant about 18 months after the debut of a 3 Series Coupe, should hold up for the 4 Series and M4. If that timing is true, we can hope to see a production M4 at the 2014 Los Angeles Auto Show.


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    • 1 Second Ago
  • 36 Comments
      sfblog
      • 1 Year Ago
      In traditional german fashion...people discussing issues & problems here on the M4 post while Lexus gets praised on the IS-F / RC-F post.
      Teleny411
      • 1 Year Ago
      My e30 is about 2800lbs. Then you will not need necessarily need turbos. That should be the goal. My e30 is practically indestructible that should be another goal.
      Henry Z. Floyd
      • 1 Year Ago
      **PIQUED our interest, not "peaked our interest". It's amazing how little writing talent you need to become a journalist these days.
        Craigg Turner
        • 1 Year Ago
        @Henry Z. Floyd
        if it is that easy why dont you get your ass in the game Henry?
          avconsumer2
          • 1 Year Ago
          @Craigg Turner
          *If it is that easy, why don't you get your ass in the game Henry? (punctuation) :P At least you got the right "your"! :D
        xspeedy
        • 1 Year Ago
        @Henry Z. Floyd
        Welcome to blogging, where anyone can be a journalist or automotive expert.
      • 1 Year Ago
      [blocked]
      Mike
      • 1 Year Ago
      435i = 4500lbs (bmwusa) "Lightweight" M4 = 4250lbs? S5 with V8 and Quattro = 3800lbs No matter how much carbon fiber you add to a car, lightweight engineering starts with the chassis. This car is WAY too heavy
        RudyH
        • 1 Year Ago
        @Mike
        that has to be a typo...lol No way it's 4,500 lbs, likely more 3,500 lbs /w automatic
        Ak74
        • 1 Year Ago
        @Mike
        @mike silly audi fan. Check your stats
      Jay
      • 1 Year Ago
      This all sounds great. Would be nice to see it back down around 3200lbs. The turbo 6 should also give some good tuning potential.
      RetrogradE
      • 1 Year Ago
      *piqued BTW, I don't care if the car is 2500lbs or 4,000lbs as long as it's quiet and goes like stink.
        tool0117
        • 1 Year Ago
        @RetrogradE
        Really, a 1500 lb difference doesn't matter to you? Have you driven before?
          RetrogradE
          • 1 Year Ago
          @tool0117
          Driven? No. But I've ridden your mom and she's overweight but fast as fu**.
      tool0117
      • 1 Year Ago
      guaranteed to be overpriced
      AcidTonic
      • 1 Year Ago
      This should be interesting. Mustang won't be able to convert to turbo 6 as easily as the M3 without pissing off their customer base. Looking forward to the next gen stang vs M3 battle....
        The Wasp
        • 1 Year Ago
        @AcidTonic
        BMW is dreading the next Mustang / M3 battle. In case you haven't noticed, F150 buyers have happily been switching from V8s to the 'biturbo' V6. I wouldn't be surprised to see a similar reaction if the Mustang goes EcoBoost V6.
          • 1 Year Ago
          @The Wasp
          [blocked]
      MONTEGOD7SS
      • 1 Year Ago
      Was there a real issue with having M3s being coupes and sedans? I just don't understand why the need.
      • 1 Year Ago
      [blocked]
      • 1 Year Ago
      [blocked]
        Avinash Machado
        • 1 Year Ago
        Why are you so cynical?
        Sean
        • 1 Year Ago
        You're an idiot to compare the weight of three completely different cars in terms of size F32 4-Series.....110.6 wheelbase/182.7 length Weight: 3,300-3,500 lbs (M4 estimates based on current speculation - Bimmerpost sources) MkVII GTI.........103.8 wheelbase/167.5 length Weight: 2,980 lbs Audi A2............94.7 wheelbase/150.6 length Weight: 1,970-2,270 lbs There's almost a full fat three-foot difference in length between an A2 and a 4-Series. Not to mention the 900kg curb weight you quoted is on a stripper-A2 that didn't come with any sort of amenities to save on weight.
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