Vehicle Appraisal at a Fixed Price: Mobile Service On-Site

In the vehicle appraisal industry, costs often vary widely. Many providers bill based on hourly effort or the determined vehicle value, which can lead to unpredictable costs for the customer. DIAVAG relies on a clear fixed-price model here. A standard appraisal for cars, boats, or cargo bikes costs auf Anfrage. For more complex assets such as EVs or home storage systems, which require in-depth battery diagnostics, the fixed price is auf Anfrage. This transparency is especially important for private sellers and buyers who need a reliable basis for calculation.

The fixed price includes not only the on-site inspection but also travel within the regions of Hamburg, Berlin, and Munich. There are no hidden fees for documentation or delivery of the digital appraisal. This pricing structure also allows lawyers and notaries to state costs precisely to their clients in advance, whether in inheritance matters or divorce proceedings. Standardization of price goes hand in hand with standardization of quality, since every appraiser follows the same certified workflow.

A key advantage of the DIAVAG model is mobility. Instead of bringing the vehicle to an inspection center such as TÜV or DEKRA, the appraiser comes directly to the location of the asset. This can be the home garage, a dealer's lot, or even a harbor in the case of boats. This service saves the customer valuable time and logistical effort. Especially for unregistered vehicles or hard-to-transport machinery, this on-site service is often the only practical solution.

Appointments are scheduled within 24 hours, which can be decisive in a fast-moving trading environment. On site, the appraiser generally needs less than 15 minutes for data collection. Using mobile hardware kits, which include OBD2 scanners and coating-thickness gauges among other tools, a high data density is achieved in a very short time. The results are recorded digitally and immediately transmitted to headquarters, where a senior inspector finally reviews and signs the appraisal. The customer usually receives the finished PDF appraisal the same day.

The legal usability of an appraisal depends heavily on the qualification of the author and the independence of the organization. DIAVAG appraisers work according to the guidelines of the BVSK (Federal Association of Freelance and Independent Automotive Appraisers). In addition, the service is designed as an inspection body according to ISO/IEC 17020 Type A, representing the highest level of independence. This means DIAVAG has no self-interest whatsoever in the sale of vehicles, insurance, or repair services.

For legal disputes, such as valuation for tax authorities or in insurance cases, this independence is essential. An appraisal prepared by a party that also has an interest in purchasing the vehicle often does not withstand legal scrutiny. DIAVAG, by contrast, delivers objective facts based on calibrated measurements. Optionally, the appraisal can be provided with a notarial hash on the Polygon blockchain to permanently prove the tamper-proof nature of the documentation. For complex legal questions, however, a specialized lawyer or notary should always be consulted, as DIAVAG does not provide legal advice.

For electric vehicles, the drive battery is the most valuable component and often accounts for up to 50 percent of the total value. Conventional appraisals that only check visual condition and fault memory fall short here. DIAVAG therefore integrates the so-called Premium Battery Test into the premium appraisal for auf Anfrage. This test determines the State of Health (SoH), analyzes cell balance, and measures actual kWh capacity as well as the battery's internal resistance.

This in-depth diagnostics is a unique feature compared to many classic testing organizations, which often only read basic data from the battery management system. A certified SoH finding is a decisive argument when reselling an EV and protects the buyer from unforeseen follow-up costs due to a degraded battery. Also with a view to the upcoming EU Battery Passport, mandatory from February 2027, DIAVAG already offers the necessary transparency and data depth today. This applies analogously to home storage systems, whose value is often difficult to determine in real estate transactions without expert testing.

While many appraisal services specialize in passenger cars, DIAVAG covers a total of seven asset classes. In addition to cars and EVs, these include boats, construction and agricultural machinery, cargo bikes, e-scooters, and home storage systems. This breadth is particularly beneficial for commercial customers, fleet operators, and insolvency administrators who need to have a broad portfolio of assets appraised. Each class follows a specific, standardized testing protocol tailored to the respective technical requirements.

For construction machinery, for example, the focus is not only on technical condition but also on compliance with the EU Machinery Regulation. For boats, specific parameters such as hull condition and propulsion technology are documented. Despite this diversity, the promise of a fixed price and mobile availability remains. An appraisal for a cargo bike or an e-scooter is prepared with the same precision and the same standards as for a high-value vehicle. This asset-agnostic approach makes DIAVAG a versatile partner for inventory valuation and risk management across various industries.

The quality of an appraisal stands and falls with the precision of the data collection. DIAVAG uses a hardware case specially assembled for mobile inspection. This case, which is also sold to independent appraisers for auf Anfrage, contains all the necessary tools for a comprehensive condition assessment. This includes an OBD2 scanner for reading out electronic fault memories, a coating-thickness gauge for identifying repainting and accident damage, as well as digital tread-depth gauges.

The on-site workflow is strictly timed. The appraiser follows a digital checklist in the DIAVAG app that mandates complete photo documentation. Every relevant detail, from the vehicle identification number to the smallest scratches, is photographically recorded. This standardization ensures that an appraisal from Hamburg is of identical quality to one from Munich. The digital transmission of data eliminates manual follow-up work in the office, enabling the extremely short processing times. The result is a professional PDF document that clearly summarizes all measurements and photos.

A central differentiating feature of DIAVAG is strict independence. Unlike many online portals that offer free valuations in order to purchase the vehicle in the next step, DIAVAG pursues no trading interest. The business model is based exclusively on producing appraisals for a fixed fee. This independence is the fundamental prerequisite for an objective valuation report that is meant to hold up in court or before insurers.

Customers who want to sell their vehicle privately often use the DIAVAG appraisal as proof of trustworthiness to potential buyers. The "Verified by DIAVAG" seal signals that the vehicle's condition has been checked by a neutral third party. This also provides security for buyers, as they do not have to rely solely on the seller's statements. In an industry often characterized by information asymmetries, DIAVAG creates a fair negotiating basis for both parties through neutral data. This positioning as a pure service provider without sales intentions strengthens the credibility of the entire valuation process.

For commercial customers such as car dealerships, leasing companies, and fleet operators, DIAVAG offers scalable solutions. From a volume of 50 appraisals per month, individual terms are agreed. A key advantage for B2B customers is the API connection to existing Dealer Management Systems (DMS). This enables seamless integration of appraisal data into the dealer's internal processes, from trade-in to marketing.

Dealers can use the DIAVAG service to professionalize their purchasing process and minimize the risk of mis-valuations. The quick availability of appraisals reduces vehicle downtime. In addition, DIAVAG offers independent appraisers the opportunity to purchase the proven hardware and software system. For a list price of auf Anfrage, they gain access to a professional infrastructure that enables them to produce appraisals according to the DIAVAG standard. This promotes the nationwide rollout and ensures comprehensive coverage with high-quality mobility appraisals.

When comparing appraisal services, customers should pay close attention to the scope of services. While classic testing organizations often focus on the periodic technical inspection (HU), DIAVAG specializes in detailed condition and value assessment. The following table illustrates the differences in approach.