THE fact that more than $1 billion was invested in the new C-class indicates this was no mere facelift. While the face does indeed improve with some identifiably S-class features, it's the flowdown of technical innovations that deserve just as much attention. Window airbags, adaptive front airbags, darkness-activated headlamps, multi-function steering wheel, fibre optics - these are just a few examples of the new developments that bring the C-class back to the pointy end of the prestige small sedan class. Improvements in engine performance, suspension design and interior space, comfort and equipment levels have also not gone unnoticed. The new diesel engine featured in this road test serves to widen the choice for prospective buyers.