BERLIN (Reuters) - Volkswagen, under pressure by high costs and Chinese competition, brushed off union proposals for cost savings on Friday, just days ahead of planned walkouts meant to avoid unprecedented plant closures.

"Although there may also be positive effects in the short term, the measures will not lead to any sustainable financial relief for the company in the coming years", the company said in a statement, adding it would remain in contact with labour representatives.

Germany's powerful IG Metall union this month proposed 1.5 billion euros ($1.6 billion) in cost savings, including forgoing bonuses for 2025 and 2026.

"Sustainable savings of 1.5 billion euros cannot be ascertained even after intensive analysis", the company said on Friday.

($1 = 0.9468 euros)