My regular garage does cambelt for £160.
Looking at the "Fire" engines, (so the old 1 litre engines and earlier, also the 1.1, 1.2 and 8 valve 1.4) you can buy the belt on it's own, a basic belt kit which includes the tensioner, or a comprehensive kit with both tensioner and water pump. A big name, good quality, belt on it's own can be had for about £8 to £10, maybe £15 max. At the other end of the spectrum a kit including tensioner and pump for a late model engine with the "automatic" (spring loaded) tensioner can be bought around the £75 to £90 mark. If you have the earlier engine with the fixed tensioner it's about £20 cheaper. The Gates kit for our Panda, with auto tensioner was about £65 from Mr Auto last year. Same belt for the Punto.
Before I did the belts on our own Panda and my boy's Punto last year, I became obsessed with trying to find out which of these engines were "interference" and which were not. (interference being the ones which suffer valve to piston contact if the belt fails - or jumps a few teeth - From all the info I was able to gain, from a wide variety of sources, earlier engines, (I think engine No 2533527 and earlier? - info found in my Haynes manual), without the automatic tensioner, seem to be safe. I think all 1.1's are too. These earlier engines are much easier to do as they still have timing marks on the crank and camshaft sprockets (cam sprocket being keyed to the cam itself) so you don't need timing tools when doing a belt and you don't need to remove the cam cover to install the cam locking tool. This knocks a load of time and hassle off the job so £160 (especially without a pump) would seem doable.
Then there are the Evo 2 engines (our 2010 1.2 Panda dynamic eco is one - I think this engine version appeared around 2009?) which had the auto tensioner and "free" cam sprocket. The cam sprocket on these is not keyed to the cam and spins freely if it's securing bolt is slackened. These engines do not have the VVT cam pulley of the later Euro 5 engines (introduced around 2011 with the Panda "my life"?) though so can be confused with the pre Evo 2 engines as both have similar looking cast pulleys. These Evo 2 engines need timing tools to do a belt (although, if you are experienced and know what you are doing you can do it by making your own marks). Evo 2 and later VVT engines need the cam cover removed to fit timing tools so I doubt if £160 would be reasonable. I would expect it to be nearer the £250 to £300 mark if it's being done "properly".
As far as I've been able to ascertain all 1.1 engines and 1.2's up to late 2010/early 2011 (when they changed the 1.2 to Euro 5 spec.) were non interference. What you can be sure of is that if you have a VVT cam pulley your engine is going to be interference. Also, I think that if you take your belt cover off and see a solid (not spring loaded "auto" type) tensioner then you are going to find timing marks on the pulleys and you won't need a timing tool kit (mine cost £40 on ebay). Being as how our Panda is a 1.2 that's the engine I know best and so, relative to the 1.2, The Euro 4 engine with 60hp and solid cast cam pulley is non interference whilst the Euro 5 engine with 69hp and VVT cam pulley is interference so will likely suffer catastrophic damage if the timing "jumps" or belt breaks.
I think all this info is correct - please feel free to correct anything folks - There is a lot of confusion. Even at the main dealer I found one man saying one thing whilst another held a different opinion!
Anyway, hope this is useful. Don't rely on it as absolute "gospel" though, it's only what other people have told me! better to be "safe than sorry" if in any doubt.
By the way, I would be very nervous about 8 years/72,000 miles. I did my boy's Punto at 6 years/circa 45,000 miles. The Panda was 8 years with 60,000 miles on the clock when I bought her. There was no record of the belt being done and the dealer wouldn't play ball. I changed it soon after purchase and it did look "well used" with water pump bearings a bit "gritty" when you spun the pulley. I think the pump bearings were in the early stages of failure. The Punto looked much better and would probably have gone maybe another year? Then again, How lucky do I feel? As I do these jobs myself so have only the parts to buy and taking into consideration Fiat's 5 year advice guidelines, We - my son and I - have decided that 4years/48,000 miles will be our "trigger point" so as soon as is convenient after that yardstick is passed we'll do it.
