Alphabet Inc.’s Google has raised fresh concerns that the European Union’s landmark Digital Markets Act (DMA) is curbing innovation and diminishing the quality of online services for users across Europe.

The U.S. tech giant is expected to voice its position at a workshop organised by the European Commission on Tuesday, urging regulators to issue clearer compliance guidelines and asking its critics to present concrete data to support their claims.

The DMA, introduced to curb anti-competitive practices by dominant digital platforms, has placed Google under heightened scrutiny. Regulators have accused the company of giving preferential treatment to its own services—including Google Shopping, Flights, and Hotels—at the expense of rivals. Violations could result in fines of up to 10% of Google’s global annual turnover.

In response to these concerns, Google recently proposed further changes to its search engine results to more prominently feature competitor offerings. However, critics argue the adjustments still fall short of ensuring fair competition.

Clare Kelly, a lawyer representing Google, is expected to warn that some of the mandated changes are already having unintended consequences.

“We remain genuinely concerned about the real-world impact of the DMA, which is resulting in inferior online products and experiences for European users,” Kelly will say, according to prepared remarks seen by Reuters.

She will cite examples where the changes have led to higher travel costs for consumers, who are no longer able to access airline websites directly from Google search results. Additionally, some European travel and hospitality businesses have reported a sharp decline—up to 30%—in direct booking traffic due to the new interface, according to Kelly.

Another Google representative, Oliver Bethell, will call on regulators to provide more detailed and practical compliance requirements that consider on-the-ground realities.

“If we can understand precisely what compliance looks like—not just in theory, but based on real-world experience—we can deploy compliant services more effectively across the European Economic Area,” Bethell will say.

He also challenged critics to move beyond general accusations and submit tangible evidence of both the costs and benefits of the DMA’s implementation.

“We need help identifying where to focus,” he will add. “That means bringing forward credible, data-driven evidence we can jointly evaluate with the Commission.”

The European Economic Area (EEA) includes all 27 EU member states, along with Iceland, Liechtenstein, and Norway.

As EU enforcement of the DMA intensifies, Google’s appeal underscores growing tension between regulators and Big Tech over how best to balance competition, consumer protection, and technological innovation.