A not often discussed problem with the EU guarantee is that in the first 6 months, every defect is presumed to have been present at the time it was bought. After 6 months it is on the consumer to prove it, and for most things it is just not worth it to pay for an expert opinion.
So in practice the iron clad guarantee is only 6 months for most consumer
products.
At least that's the interpretation of the law in the UK.
edit: small claims courts are quite accessible in the UK, so often the threat of small claims can get thing moving.