Booking a Vehicle Appraiser On-Site: Mobile Service at a Fixed Price

Commissioning a mobile appraiser offers significant logistical advantages over stationary inspection organizations. Traditionally, vehicle owners had to coordinate appointments at inspection centers, which often meant waiting times and the risk of transfer plates or trailer transport. At DIAVAG, the appraiser comes directly to the location of the asset, whether that's a private garage, a company yard, a harbor, or a fleet of machinery. This service is available in the regions of Hamburg, Berlin, and Munich without additional travel fees.

A key aspect of the mobile inspection is the time saved. The entire on-site process typically takes under 15 minutes. During this time, the appraiser carries out a standardized workflow that captures all relevant technical parameters. This is particularly important for commercial customers and fleet operators, since it minimizes vehicle downtime. The flexibility of location also makes it possible to appraise assets that are not roadworthy or that, due to seasonal deregistration, may not be moved on public roads.

A common problem when commissioning appraisers is unpredictable costs from hourly billing or mileage flat rates. DIAVAG relies on a transparent fixed-price model that provides planning certainty for private customers and businesses alike. The standard valuation report for cars, boats, cargo bikes, or e-scooters is offered at a fixed price of auf Anfrages. This price includes travel within the region, the on-site technical inspection, and preparation of the BVSK-compliant appraisal.

For more complex assets such as electric cars or home storage systems, the fixed price is auf Anfrages. This surcharge is justified by the use of specialized hardware for the Premium Battery Test. For major clients, car dealers, and fleet operators reaching a volume of more than 50 appraisals per month, DIAVAG offers individual terms. These often also include an API connection to existing Dealer Management Systems (DMS) to seamlessly integrate the appraisal process into the dealership's digital workflows. The cost of the hardware case, including the software license for independent partner appraisers, is a one-time fee of auf Anfrages.

When appraising electric vehicles and residential PV storage systems, a purely visual assessment is not sufficient. The value of these assets depends significantly on the condition of the high-voltage battery. While conventional inspection organizations often only offer a basic diagnostic via the fault memory, DIAVAG integrates the Premium Battery Test as standard in the premium appraisal. Using specialized hardware, State-of-Health (SoH), cell balance, actual kWh capacity, and internal resistance are measured.

This data is crucial for determining market value, as the battery often accounts for up to 50 percent of an electric car's total value. The test provides objective evidence of the charging curve and potential signs of degradation. This protects buyers from hidden defects and allows sellers to achieve a fair price based on valid technical data. Given the upcoming EU Battery Passport, which becomes mandatory from February 2027, this in-depth diagnostic approach is already a future-proof solution for valuation today.

The usability of an appraisal depends on the qualification of its author and compliance with recognized standards. All appraisers at DIAVAG work according to the guidelines of the German Federal Association of Freelance and Independent Vehicle Appraisers (BVSK). In addition, DIAVAG operates as an inspection body under ISO/IEC 17020 Type A, guaranteeing the highest level of independence. This means DIAVAG has no vested interest whatsoever in the sale of vehicles, insurance, or repair services.

Every PDF appraisal is reviewed and signed by a senior inspector. For cases requiring particular tamper resistance, such as inheritance matters, divorces, or insurance disputes, DIAVAG optionally offers a notarial hash on the Polygon blockchain. This ensures the document cannot be altered after the fact. For complex legal questions relating to the use of appraisals, it is always recommended to consult a specialized lawyer or notary, as DIAVAG does not provide legal advice.

A unique feature of DIAVAG is the breadth of asset classes covered. While most appraisal services specialize in cars, DIAVAG's portfolio spans a total of seven categories. In addition to combustion and electric cars, these include boats (sport, motor, and sailing boats), construction and agricultural machinery, cargo bikes, e-scooters, and stationary home storage systems for photovoltaic installations. Each class has a specific inspection workflow tailored to its technical requirements.

For construction and agricultural machinery, the focus is, for example, on operational safety and residual value in light of the EU Machinery Regulation 2023/1230, which becomes mandatory from January 2027. For boats, the drive systems and onboard electronics are assessed alongside the condition of the hull. This cross-asset expertise makes DIAVAG a central point of contact for insurers and trustees who need to have different types of assets valued to a consistent standard.

The process begins with booking an appointment, which can typically be arranged within 24 hours. On-site, the appraiser uses a standardized hardware case. The basic equipment includes an OBD2 scanner for reading the fault memory and real-time parameters. A paint thickness gauge is used to identify repainting and hidden accident damage, which is essential for determining any loss in value.

Tread depth gauges for the tires and digital multimeters for testing electrical systems are also used. Standardized photo documentation ensures that all relevant areas of the asset are captured completely. The collected data is transmitted encrypted to the central software platform, where it is finalized by the senior inspector. Data storage is GDPR-compliant on servers within the European Union. The customer usually receives the finished appraisal as a legally binding PDF document the same day.

In a market often shaped by conflicts of interest, DIAVAG positions itself strictly as an independent service provider. Unlike car-buying platforms that prepare appraisals to justify as low a purchase price as possible, or repair shops seeking to generate repair orders, DIAVAG has no downstream business model. Vehicles are neither purchased, nor is insurance brokered, nor are repairs carried out.

This independence is a prerequisite for the appraisal's acceptance by third parties, such as tax authorities in inheritance cases or insurers in claims. Compliance with the JVEG (Judicial Remuneration and Compensation Act) serves as an orientation framework for fee structure and formal presentation of the reports. Customers thus receive an objective picture of the true market value, based on technical facts rather than sales interests.

Comparing mobile services like DIAVAG with classic inspection organizations such as TÜV or DEKRA shows clear differences in scope of services. While inspection organizations focus on the periodic technical inspection (HU) and general road safety, DIAVAG specializes in detailed value determination and in-depth technical diagnostics. Particularly in the field of electromobility and with special assets such as home storage systems, traditional inspection centers often lack the necessary diagnostic depth.