that isnt exactly true, yes they share design and floorplans and they are still build by skoda, however the main problem with original skodas was the build quality, now that they have VW group designs and vw group implemented working practices and materials they are obviously nothing like the old "comedy" skodas.
they seem to have turned full circle and thats great, the skoda range is superb (badum tsssshhh!) and yes they hold there value brilliantly and in the case of cars like the fabia vRS are nice little pocket rockets!
I agree entirely that Skodas are now very good cars but I take issue with a couple of points.
Those "comedy" Skodas won their class on the RAC rally for 17 years in a row. I joked at the time when they were bought by VAG that VW had finally worked out how to win in international rallying - Buy Skoda. However, VW blew it. None of their VW clones have ever been as succesfull as genuine Skodas.
And the question of depreciation is also an interesting one. Very much a case of lies, damn lies and statistics.
If you trust statistics then you could say that an Estelle for example probably suffered from something like 90% depreciation in the first year of ownership, compared to a mere 33% for a current Superb. But look at that in terms of pound notes and it takes on a different complexion.
An Estelle cost about £3500 and lost virtually all of that in the first year, a Superb cost £15000 and only lost a third. But that's still 5 grand! So how is that a better investment?
When I was in the motor trade I had a number of customers with rear engined Skodas and Favorites when they came along. They bought new, ran them for the duration of the 3 year warranty and then bought another new one. When the VW clones came along the price doubled and they could no longer afford to buy them. One guy said "I'd rather be able to afford a new car with a rattly dash and funny looks, than buy a used VW".
It's easy to improve build quality if you can just double the price. All VW did was change the target market sector that they were aiming at. A huge and brave investment but whether they can claim an "improvement" is debateable.