Yes, welcome!
It might be true that the Uno Turbo standard brakes don't feel as powerful as more recent cars. But, they are certainly a decent size for the weight of the car that they're dealing with. Consider that they're uprated front and rear compared with the standard Uno! You just don't get much servo assistance - the brakes themselves are big enough.
That was when they were new, which is over ten years ago. As Bushboy and Louie point out, by this time the brakes probably need some TLC. Start with changing the fluid - probably no immediate difference, but safer because there's no risk of the fluid boiling.
To change the fluid, just bleed each corner with an 8mm spanner and a piece of pipe (with someone to pump the pedal). There are all sorts of devices to do the job by yourself, but the simple ways are often easiest.
Next I'd suggest new front pads and discs - unless the discs look smooth and evenly shiny. More likely, they will have a 'textured' look from years of corrosion interspersed with occasional use. Also they may be quite wavy or worn dangerously thin. It usually pays to have a second (unbiased) opinion before spending for new discs, but at the same time it's a shame to compromise new pads by having uneven discs that the pads can't match to.
You might like to give 'EBC Green Stuff' pads a try? I've heard that they're good. I know that standard pads tend to produce heaps of brake dust. Remember that softer pads give better braking (and more dust) - and competition pads are harder, therefore more durable, but must not be used on the road because they don't work properly until warmed up.
Rear pads don't wear much. But of course, they need to be checked.
Finally, check the servo is doing something. With engine off, pump the pedal a number of times until the servo vacuum is depleted (the wooshing noises when you press the pedal should subside after about 4-5 pumps for the Uno) and then hold the pedal down. Start the engine. You should feel the brake pedal go down. If not, or if there weren't any wooshing noises, I think you should suspect that the servo has a poor connection.
With the standard brakes in good condition, they're fine. But if you have to replace a number of parts, you might decide that it's better to upgrade the brakes at the same time. And, they will fill those lovely wheels better
Thanks!
-Alex
