Transparent Fixed Price for Vehicle Appraisals: Costs and Services

In the traditional appraisal industry, fees are often based on the determined vehicle value or the time spent. For you as a customer, this means considerable uncertainty, since the final costs are only known after the appraisal is complete. DIAVAG breaks with this lack of transparency through a strict fixed-price model. A fixed flat rate for standard appraisals allows private sellers, heirs or buyers to calculate the cost of professional expertise precisely.

This price stability is especially advantageous in legal disputes or when settling estates. When lawyers or notaries commission appraisals for their clients, cost transparency is an essential criterion for accepting the service. A fixed price rules out additional charges and ensures that the focus is on the technical quality of the appraisal. DIAVAG guarantees that no hidden travel fees apply within the regions of Hamburg, Berlin and Munich. This clearly distinguishes the service from regional appraisal firms, which often charge mileage-based flat rates.

DIAVAG's pricing is divided into two clear categories to account for the differing technical complexity of the assets. The standard appraisal at a fixed price covers combustion-engine cars, boats, cargo bikes and e-scooters. This price includes the entire mobile inspection workflow, including the use of calibrated hardware such as coating-thickness gauges and OBD2 scanners. The result is a BVSK-compliant PDF appraisal, delivered the same day.

For more technologically demanding assets such as electric cars and home storage systems, the premium fixed price applies. This surcharge is justified by the integrated Premium Battery Test. While conventional inspection organizations often only carry out a basic diagnosis, DIAVAG delivers detailed data on the State-of-Health (SoH), cell balance and the actual capacity of the high-voltage battery. For commercial customers such as dealers or fleet operators requiring a volume of more than 50 appraisals per month, DIAVAG offers individual terms. These also include API integration into existing Dealer Management Systems (DMS) to automate the processes.

A key factor in DIAVAG's efficiency and fixed pricing is its mobile approach. The appraiser comes directly to the location of the vehicle or device, whether that's a private garage, a company yard or a harbor. This spares you the time-consuming transport of the asset to an inspection site. This on-site service is a decisive advantage especially for unregistered vehicles, boats on trailers or stationary home storage systems.

Despite the mobility, the price remains stable. The standardized workflow allows the expert to complete the inspection in under 15 minutes. By using a specially developed hardware case containing all necessary measuring instruments, the appraiser is completely self-sufficient. This process optimization is the reason DIAVAG can offer appointments within 24 hours. The combination of speed and location independence makes the service ideal for short-notice purchase decisions or urgent insurance cases.

An appraisal is only as good as its legal robustness. DIAVAG ensures that all documents produced meet the highest quality standards. All appraisers hold BVSK-compliant qualifications. DIAVAG also operates as an inspection body under ISO/IEC 17020 Type A, representing the highest level of independence. This means that DIAVAG has no vested interest whatsoever in selling vehicles, insurance or repair services. This neutrality is essential when appraisals are used in court, in divorces or in inheritance matters.

Every appraisal is finally reviewed and signed by a senior inspector, since experts always retain control over the final conclusions. For cases requiring absolute tamper-proofing, DIAVAG optionally offers a notarial hash on the Polygon blockchain. This creates a digital fingerprint of the document that proves its immutability. For complex legal questions, we always recommend consulting a lawyer or notary, with our appraisals serving as a recognized basis for value determination under the JVEG (Judicial Remuneration and Compensation Act).

For electric vehicles, the battery is the value-determining component. A conventional value appraisal that only checks the visual condition and tire tread depth falls short here. DIAVAG therefore integrates the Premium Battery Test into every e-car appraisal. Using specialized hardware, real-time parameters are read from the battery management system. These include cell voltages, internal resistance and charge cycles.

The result is a precise indication of the State-of-Health (SoH). This value indicates how much capacity the battery still has compared to its original condition. An SoH of 95 percent versus 85 percent can influence the market value of a used Tesla or VW ID.3 by several thousand euros. Since DIAVAG already meets the requirements of the upcoming EU Battery Passport (mandatory from February 2027), customers receive future-proof documentation. This level of detail in battery diagnostics is often not offered in the standard package by classic inspection organizations.

While many appraisal services specialize in passenger cars, DIAVAG covers a total of seven asset classes. These include not only cars and electric cars but also boats, construction and agricultural machinery, cargo bikes, e-scooters and home storage systems. This breadth is a unique selling point in the market. A construction company can, for example, have the residual value of its fleet of excavators and wheel loaders assessed using the same standardized process as a private sailor having their motorboat appraised before the end-of-season sale.

The valuation of home PV storage systems is gaining particular importance in real estate transactions. When a house is sold, the value of the installed solar technology and storage system must be precisely quantified in order to determine a fair overall price. DIAVAG uses the same battery diagnostics expertise here as for electric vehicles. The promise applies to every asset class: a 24-hour appointment, standardized photo documentation and a legally sound PDF appraisal at a fixed price.

The ability to offer high-quality appraisals at a low fixed price results from a consistent digitalization of the workflow. Every DIAVAG appraiser uses an identical hardware case, which is issued to independent partners. This case contains, among other things, an OBD2 scanner, a digital multimeter and a precision coating-thickness gauge. The guided software app ensures that no relevant inspection point is overlooked.

On site, data collection takes less than 15 minutes. Photos are taken in a fixed, predefined sequence, which increases comparability, tamper-proofing and complete source traceability. Once the data is synchronized, the evaluation takes place centrally. This separation of on-site data collection and final appraisal creation by senior inspectors guarantees consistently high quality, regardless of whether the inspection takes place in Hamburg or Munich. The finished PDF appraisal is GDPR-compliant and stored on servers within the EU.

For professional market participants such as car dealerships, leasing companies or fleet operators, DIAVAG offers scalable solutions. From a volume of 50 appraisals per month, terms are agreed individually. A decisive advantage for B2B customers is seamless integration into existing IT infrastructure. Via a DMS API, appraisal orders can be triggered directly from the Dealer Management System, and the results fed automatically back into the vehicle file.

This significantly speeds up the acquisition process for trade-ins. A sales advisor no longer has to wait for an external appraiser who only shows up days later. Thanks to DIAVAG's 24-hour promise, vehicle standing time remains minimal. In addition, the DIAVAG quality seal boosts trust among end customers on online platforms. Dealers can thus prove that their vehicles were independently inspected according to strict BVSK standards, which can demonstrably increase sales speed.

DIAVAG differs significantly from other market participants. Unlike organizations such as TÜV, DEKRA or GTÜ, DIAVAG does not perform periodic technical inspections (HU/AU). The focus is purely on value-based and technical condition assessment, particularly incorporating in-depth battery diagnostics, which is often not part of the scope at standard inspection bodies. While inspection organizations mostly work from fixed locations, DIAVAG is 100 percent mobile.

DIAVAG also differs from vehicle purchase platforms. Such portals have a vested interest in setting the vehicle value low in order to achieve a higher margin on later resale. DIAVAG, on the other hand, does not sell vehicles and does not broker insurance. This independence is the prerequisite for certification as an inspection body under ISO/IEC 17020 Type A. The service also distinguishes itself from pure algorithmic estimators: a DIAVAG appraisal is always based on a physical inspection by a qualified appraiser, not merely on statistical data models.