A German court has ruled that Mondelez International, the US confectionery giant, misled consumers by reducing the size of its Milka chocolate bar without clearly labelling the change. The ruling, delivered by the Higher Regional Court of Frankfurt, could have far-reaching implications for EU labelling laws and the practice of "shrinkflation," where manufacturers reduce product sizes while maintaining prices.

The case was brought by the Federation of German Consumer Organisations (VZBV), which argued that the company had contravened EU consumer protection laws by failing to adequately notify customers of the reduction. The Milka bar, traditionally sold in 300-gram blocks, had been reduced to 270 grams while the packaging remained largely unchanged, with only a small notation indicating the new weight.

The court agreed with the consumer group, stating that the subtle change in weight was insufficient to alert buyers. "Consumers expect that a familiar product retains its size and weight," the court found. "A reduction of this magnitude must be clearly and prominently displayed."

The ruling is expected to prompt a broader review of EU labelling standards. Currently, regulations require only that net weight be listed on packaging, with no mandate to highlight reductions. Critics argue this allows companies to profit from consumer inertia, as shoppers often fail to notice incremental downsizing.

Mondelez plans to appeal the decision. A spokesperson said the company had complied with all legal requirements and noted that the reduced bar was part of a "portion-controlled" range. However, industry analysts suggest the ruling could encourage consumer groups across Europe to file similar suits, particularly against brands that have engaged in shrinkflation amid rising commodity costs.

The European Commission has been under pressure to tighten rules around so-called "shrinkflation" since a 2023 study found that over a third of EU consumers had noticed smaller product packages in the previous year. The Commission is currently consulting on revisions to the Unfair Commercial Practices Directive, which could mandate clearer labels for size reductions.

In the UK, which retains EU-derived consumer protections post-Brexit, the ruling has no direct legal effect but is seen as influential. The British Competition and Markets Authority recently warned it would crack down on misleading packaging.

The case also highlights broader tensions around consumer trust and inflation. With food prices rising sharply across Europe, shoppers have become more sensitive to changes in product value. A 2024 survey by the consumer group Which? found that 70% of UK consumers had experienced shrinkflation in the previous year, with chocolate bars among the worst offenders.

Legal experts note that the German court’s reasoning could be extended to other products and other countries within the EU single market. If upheld on appeal, the ruling may force manufacturers to redesign packaging or add specific labels when weights are reduced.

For now, the Milka bar remains on shelves at 270 grams. But the case has already refocused attention on what some activists call a "silent tax" on consumers. As one VZBV representative put it: "Companies should not be allowed to quietly shrink their products and hope nobody notices."