To big? Its no bigger than a BMW 6 series, its smaller infact, shorter than a 5 series though wider and slightly bigger than an Audi RS5, DB9 or GTR and pretty much identical in size to a Jaguar XKR.
So is it too big, well BMW 6 series seems fine, never had an issue driving 5 series around at great pace even on narrow roads and had great fun in an XKR-S couple of years ago, all cars of a similar size.
What makes it unsophisticated? It suspension, electronic systems are more advanced and superior to many other cars on the market, Ford Mondeo for example, Vectra Insignia, yet these cars seem to have no issue. Its a grand touring car which offers great comfort with a sporty drive should one wish to press on a little with a setup that rewards the driver, what it is not is a true sports car, it is no 911 or BMW M car. Chris Harris himself said, though the car is not at the cutting edge it can cover ground fast but most of all it is a giant middle finger to the EU, big fat V8, RWD that is an absolute joy to drive and every time he gets in it well it feels so special.
Seems to go damn well surprising considering those are narrower b-roads in damp/greasy conditions and on the stock Pirelli Pzero tyres which are not so special in such conditions and I can vouch for this having had them on the 911, they are no Michelin or Goodyear for grip in poor/wet conditions. But this is clearly the review you missed? Chris Harris the presenter regarded as the god for car reviews, who just says how it is irrelevent of what the manufacturer thinks. Well he loves the Mustang, I think him saying how good the stock car good testament and he truly understands it due to how special it is. Yes it has flaws like the stock dampers don't have enough rebound which cause to much deflection/bounciness on more technical roads and the steering could be quicker and more precise.
To fix what is lacking does not cost a lot of additional money!
You can sort all the suspension issues for about £1000, which will stop the deflection/bounciness on more technical roads and improve the steering precision/response.
I've spent just shy of £4000, got complete FRPP Kit, plus complete Steeda and BMR suspension kit to complete transform it. I've also got a full catback exhaust system along with exterior and interior style changes and some other bits. I've also gone with only best stuff, I could have got an exhaust half the price, but I'd rather just do it right first but I've got all this for sub 4k and the suspension/handling can be sorted for 1k easily. When it comes to tyre changing time, stick Michelins on instead of Pirelli, will give a nice handling/grip improvement, transformed my 911 to put it bluntly just changing tyres.
Hopefully in years to come Ford UK will have FRPP division and this is looking likely from speaking to people high up at Ford, that could mean for future customers they can then specify FRPP racing parts at time of ordering or get fitted by Ford at a later date as an upgrade whilst maintaining warranty.
As Chris Harris says, its not an M3 beater, but an M3 is twice the price and is nowhere near twice the car.
There is no other V8 GT/Sports coupe on the market brand new which competes with this car, your either having to downsize the engine and still spend more or simply have to spend lots more or buy something second hand.
An M235i just has no excitment for me, yeah its a damn capable car, on the road especially with auto transmission I'd expect it to be quicker than the Mustang and only on a track the Mustang be quicker or a smoother road. But if we were all buying cars based on performance figures, we'd all buy GTR's there is no car that is quicker on the road.
An M235i is just meh, a Mustang is WOW, it has heritage, a true following and people get excited at the thought of them, no one really gives a toss over an M235i its just a good all round car.
M3/M4 are double the price, they are better but not twice as good, the competing car would be the Shelby GT350/R which is better than an M3/M4 and vastly better than a C63, but its pointless comparing them, the BMW cost twice as much and the Shelby won't be coming to Europe at all or not for some time.
Also the BMW E9x M3 in my view is better than the current M3/M4, simply because it has a true M engine, high revving NA V8 that sounds glorious, this car if was still being built would be far more similar to the Mustang, but it is no longer a new car.