Large-customer interface: how large customers file a registration application

How does filing via the interface work? This page sums up § 37 of the German Vehicle Registration Ordinance of 2023 for the trade.

Zevra is the B2B platform for digital vehicle registration for car dealers, registration services and fleets: cases are entered in the dealer portal and filed nationwide by power of attorney with qualified electronic signature – from €10 per registration, no base fee, no minimum volume.

Last updated: 2026-10-12 · Zevra editorial team · Reviewed by M. Gabal, owner

Who may file applications via the large-customer interface?

Only a registered large customer files applications. Before each application it must authenticate. To do so it states the identification feature assigned to it on registration.

Only after successful authentication can an application be filed via the interface.

For whom can the large customer file the application?

The power of attorney is transmitted to the large-customer interface. Its form is governed by § 38 of the ordinance.

How does the large customer learn of the decision?

With the application the large customer declares its consent to electronic notification. The registration authority's decision can be notified to it by arriving in a mailbox.

• a mailbox set up for it at the Federal Motor Transport Authority,
• or the mailbox of its organisation account under the Online Access Act.

What applies to more than 100 applications in 1 day?

If a large customer intends to file an exceptionally high number of applications within 1 day, it coordinates directly with the registration authority beforehand.

Under the ordinance, a number of more than 100 applications is exceptional.

Which steps does filing involve?

• authentication with the identification feature,
• application for itself or for a third party as keeper,
• consent to notification in the mailbox,
• transmission of the power of attorney if a third party is the keeper.

The 4 steps follow directly from § 37 of the ordinance.

What does this mean for dealers?

The interface requires a separate registration as a large customer with the Federal Motor Transport Authority.

With Zevra the dealer files cases in the dealer portal, and the keeper grants the power of attorney with a qualified electronic signature. Registration costs from 10 € per case, deregistration 2 € net, plus official fees.

Read more

• i-Kfz stage 4: what is new – and what does it mean for dealerships?
• i-Kfz portal: procedure, 30-minute limit and availability of online registration
• Online registration rejected: common reasons and solutions
• i-Kfz for companies and dealers: portal, large-customer interface or service
• Becoming a KBA large customer: requirements, details and duties
• Electronic registration application: identification, checks and fees
• Power of attorney for large customers: signature, seal and automatic data completion
• Registration notice for large customers: notification, effect and immediate putting into service
• Car dealerships
• Registration services
• Fleet operators
• Manufacturers & importers
• Pricing

Sources: Fahrzeug-Zulassungsverordnung (FZV) § 37 – Antragstellung über die Großkundenschnittstelle · Fahrzeug-Zulassungsverordnung (FZV) § 38 – Übermittlung eines Antrags an die Zulassungsbehörde · Sources · FZV sections § 37 · FZV sections § 38