Why doesnt Merc make an engine with 4 valves per cylinder?

[amanthapar]

............ why o why does make only 3 valves per cylinder...

could that be reason why bmw engines are more powerful?

or is it that merc is worried abt consumption?

[yg60m]

It was a choice for pollution reasons from what i read at the time they launched their 3 valves/cylinders engines but they are to c.ome back to 4 valves from what we can read (the new V6 of the SLK has 4 v/c) and maybe big n/a engines for the AMG products ( i read 6.3 V8 for 500 bhp ..) . Wait and see

[Harbormaster]

You won't have long to wait for 4 valves.....the S models will get them in 2006.

[ahmedgiyab]

next generation engines will be 4valves/cylinder.... :)

[Ford Capri 2.8i]

But will they continue adding the compressor as well in their powerful and sporty models?......I hope so, if not, its going to be a shame and a big mistake for me.