# Bundeskartellamt price enforcement actions

> Live situation record from CLSTR: https://clstr.news/situations/bundeskartellamt-price-enforcement-actions
> Updated: 2026-08-13T14:51:17.000Z. Sources: 14. Developments: 4.

In July 2026, the German Federal Cartel Office (Bundeskartellamt) imposed €11.9 million in fines on three tyre-distribution firms for a vertical “margin-guarantee” scheme that forced minimum margins on Maxxis and CST brand tyres. The companies cooperated, resulting in reduced penalties, and the fines remain subject to appeal.

Following this, the regulator expanded its scrutiny to the fuel sector. Bundeskartellamt President Andreas Mundt confirmed that the data-driven investigation into refinery pricing is proceeding as planned, with the Higher Regional Court in Düsseldorf upholding the obligation for refinery operators to provide requested data.

Simultaneously, state-level authorities are investigating widespread violations of the “12-o’clock rule,” a regulation introduced in April that limits fuel stations to a single price increase per day at noon. In Schleswig-Holstein, officials identified approximately 21,000 potential breaches. In Berlin, the Senate Department for Economics, Energy and Enterprises reported thousands of instances of unauthorized price increases during April and May. The Bundeskartellamt noted that 193 stations nationwide managing prices from Berlin are under suspicion. To date, 79 administrative offense proceedings have been initiated.

While the Market Transparency Unit for Fuels (MTS-K) monitors compliance, enforcement and penalties are managed by state authorities. The regulation has impacted station operations; the Central Association of the Gas Station Trade (ZTG) reports a decline in shop sales as customers rush to refuel before the noon hike. In Brandenburg, authorities are still preparing a legal ordinance to establish an enforcement body capable of issuing fines that can reach up to 100,000 euros.

## Timeline

### 2026-08-13: Germany fuel price rule impacts gas station revenue and enforcement

Germany's 12 PM fuel price increase rule is causing a drop in gas station shop sales and facing inconsistent enforcement across federal states like Brandenburg.

5 sources. https://clstr.news/cluster/germany-fuel-price-rule-impacts-gas-station-revenue-and-enforcement

### 2026-08-09: Berlin gas stations investigated for fuel price regulation violations

Berlin authorities are investigating multiple gas stations for violating the 12-hour rule, which restricts fuel price increases to once daily at noon to prevent illegal price manipulation.

3 sources. https://clstr.news/cluster/berlin-gas-stations-investigated-for-fuel-price-regulation-violations

### 2026-08-04: German regulators intensify probe of fuel price compliance and violations

German authorities are probing refinery price data and reviewing 21,000 suspected 12‑o’clock rule breaches at fuel stations, with potential fines and ongoing court‑ordered reporting.

8 sources. https://clstr.news/cluster/german-regulators-intensify-probe-of-fuel-price-compliance-and-violations

### 2026-07-21: German Cartel Office fines tyre distributors €11.9 million for price fixing

Germany's Cartel Office fined Maxxis, Best4Tires Berlin and Reifen Müller €11.9 million for illegal tyre price‑setting agreements; penalties await appeal.

8 sources. https://clstr.news/cluster/german-cartel-office-fines-tyre-distributors-119-million-for-price-fixing

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Cite as: Bundeskartellamt price enforcement actions. CLSTR, https://clstr.news/situations/bundeskartellamt-price-enforcement-actions