Except the VAT and petrol tax have nothing to do with income tax. So you can't just add it to the ~40% income tax. 21% VAT is quite normal in the EU, so that's nothing special.

Also source on that petrol tax? According to http://uk.reuters.com/article/2014/07/23/uk-czech-tax-idUKKB... it seems to be one of the lower in the EU, as the cut would have "put Czech petrol taxes below minimum rates allowed in the European Union"