Appraisal at a Fixed Price: Transparent Vehicle Valuation by DIAVAG

In the traditional industry, pricing for expert services often follows opaque fee schedules or time-based billing models. For clients from both the private and commercial sectors, this poses a significant financial risk, since the final amount is only determined after the work is completed. An appraisal at a fixed price eliminates this uncertainty entirely. At DIAVAG, the pricing structure is reduced to two clear core categories: auf Anfrages for standard assets and auf Anfrages for premium assets. This fixed price covers the entire mobile inspection, the use of calibrated hardware, and preparation of the BVSK-compliant appraisal by a senior inspector.

No additional costs are incurred for travel within the areas of Hamburg, Berlin, and Munich. This transparency is particularly important in legal disputes, divorce proceedings, or estate administration, since the cost of the valuation can be budgeted precisely in advance. While classic appraisal firms often bill according to the value of the item, DIAVAG's costs remain efficient and stable thanks to standardized processes and digital workflows. This also allows lawyers and notaries to give their clients clear cost estimates for the necessary valuations. The appraiser's independence is preserved throughout, since DIAVAG does not buy vehicles, broker insurance, or carry out repairs. Payment is made exclusively for the neutral inspection and valuation service.

The differentiation in fixed prices is based on the technical complexity of the object being assessed. The standard fixed price of auf Anfrages applies to conventional combustion-engine cars, boats, cargo bikes, and e-scooters. This package includes a comprehensive visual inspection, fault-memory readout via OBD2 scanner, a paint coating-thickness measurement to identify accident damage, and standardized photo documentation. The result is a legally sound PDF appraisal that precisely reflects the current market value and technical condition.

For technologically more demanding assets such as electric vehicles and home storage systems, a premium fixed price of auf Anfrages is charged. This surcharge is justified by the use of the Premium Battery Test. Here, specific parameters such as state-of-health (SoH), cell balance, and the actual kWh capacity of the high-voltage storage system are determined. Since the battery is the most valuable component in EVs and home storage systems, this in-depth diagnosis is essential for a credible valuation. For commercial customers, car dealers, and fleet operators, DIAVAG offers individual terms starting at a volume of 50 appraisals per month. These also include an API connection to existing dealer management systems (DMS), seamlessly integrating the valuation process into the purchasing workflow. Independent experts also have the option of purchasing the standardized hardware case, including the software license, at a list price of auf Anfrages to raise their own services to DIAVAG's level.

An appraisal is only as valuable as its legal standing. DIAVAG relies on the highest standards to ensure the admissibility of its documents before insurers, tax authorities, and courts. All experts work according to the guidelines of BVSK (the Federal Association of Independent Automotive Experts in Germany). This guarantees a level of professional qualification that goes far beyond simple online estimates. In addition, the inspection body's structure is designed to meet the requirements of ISO/IEC 17020 Type A, which represents the highest level of independence in the inspection industry.

Every appraisal produced goes through a quality assurance process and is finally signed off by a senior inspector. For cases requiring absolute tamper-proofing, DIAVAG optionally offers a notarial hash on the Polygon blockchain. This digital fingerprint irrevocably documents the condition of the appraisal at the time it was created. In the context of inheritances or divorces, the appraisal serves as an objective basis for dividing assets. In insurance cases, it forms the basis for calculating the replacement value under the JVEG (Judicial Remuneration and Compensation Act). However, it is important to emphasize that DIAVAG does not provide legal advice. For specific legal questions about using the appraisal, clients should always consult a qualified lawyer or notary. Independence from workshops and vehicle dealers ensures that no vested interests flow into the valuation, which massively strengthens the document's credibility with third parties.

Besides the fixed price, the greatest advantage of the DIAVAG model is mobility. The expert comes directly to the asset's location, whether a private garage, a company yard, a harbor, or a utility room housing a home storage system. This saves the client time and logistics costs, since the vehicle or system doesn't need to be transported to a testing facility. An appointment is usually available within 24 hours. The actual on-site inspection process is optimized for maximum efficiency and takes under 15 minutes. This is made possible by a strictly standardized workflow and the use of specialized hardware.

The hardware case used includes, among other things, an OBD2 scanner for vehicle electronics, a coating-thickness measuring device for paint inspection, a tread-depth gauge for tires, and a digital multimeter. All documentation is done digitally via a mobile application that guides the expert through all relevant inspection points. This standardization ensures that every appraisal in Hamburg has the same quality and structure as one in Munich or Berlin. Data is stored in compliance with GDPR on servers within the European Union. Immediately after the on-site inspection, the data is transmitted to headquarters, where final evaluation and signing take place. The customer usually receives the completed PDF appraisal by email the same day, which represents a decisive market advantage especially in time-critical transactions.

While classic inspection organizations such as TÜV, DEKRA, or GTÜ primarily focus on the periodic technical inspection of motor vehicles, DIAVAG covers seven different asset classes. This breadth is rare in the market for independent experts. Alongside conventional combustion-engine cars, the portfolio includes electric vehicles, boats, construction and agricultural machinery, cargo bikes, e-scooters, and stationary home storage systems. Each of these classes requires specific expertise and adapted testing methods. For boats, for example, hull condition and propulsion technology are key, while for construction and agricultural machinery, compliance with EU Machinery Regulation 2023/1230 and the general wear level of hydraulic systems are assessed.

The valuation of PV home storage systems is particularly innovative. Since these systems are often permanently connected to a property, their condition plays a significant role in real estate transactions. A DIAVAG appraisal at the fixed price of auf Anfrages provides the necessary clarity on remaining capacity and the functionality of the storage unit. DIAVAG also offers professional valuations in the field of micromobility, for example for high-value e-cargo bikes, which can be used for insurance contracts or resale. This cross-asset expertise makes DIAVAG a central point of contact for private individuals and businesses managing a diverse portfolio of technical assets that need to be assessed.

In the valuation of electric vehicles, it has become widely recognized that visual condition and mileage only partially indicate actual value. The heart of an EV, and at the same time its most expensive component, is the traction battery. A conventional value appraisal that merely reads out the fault memory falls short here. DIAVAG therefore integrates the Premium Battery Test as a fixed part of the 299-euro premium appraisal. This test delivers detailed data on state-of-health (SoH), i.e., the battery's condition compared to when new.

Cell balance and internal resistance are also measured to identify potential weaknesses in individual battery modules early on. This data is crucial not only for the current market value but also for assessing remaining warranty claims against the manufacturer. With regard to the EU Battery Passport, mandatory from February 2027, DIAVAG is already prepared today to meet the required transparency standards. For buyers of a used electric vehicle, this appraisal offers assurance against investing in a vehicle with a degraded battery. Sellers, on the other hand, can achieve a higher market price through objective proof of a healthy battery. DIAVAG's independence is a decisive argument here, since unlike manufacturer-owned workshops, there are no conflicts of interest in assessing battery quality.

The occasions for commissioning an expert appraisal at a fixed price are varied. In the private sphere, life-changing events are often at the forefront. In an inheritance, the value of vehicles or machinery must be precisely determined to enable a fair division among heirs or to substantiate the inheritance tax declaration to the tax office. In divorce proceedings, the appraisal serves to determine the equalization of accrued gains. Here, acceptance of the appraisal by both parties and their legal representatives is essential, which is supported by DIAVAG's BVSK compliance and ISO certification.

Another important area is lease returns. Lessees can use a DIAVAG appraisal prepared in advance to document a vehicle's condition and protect themselves against unjustified claims from leasing companies. In insurance cases as well, for example after a natural-hazard loss or theft, an up-to-date value appraisal is a powerful tool for proving the replacement value to the insurer. In the commercial sector, dealers use the mobile service to quickly and legally assess trade-ins without tying up their own staff. The fixed-price guarantee allows all parties involved to include the cost of valuation as a fixed item in their calculations, which greatly simplifies economic planning.

For professional players in the vehicle market, DIAVAG offers scalable solutions that go beyond a single appraisal. Car dealerships, leasing companies, and fleet operators often face the challenge of having to assess a large number of assets in a short time. The DIAVAG system is built for these high volumes. Starting at a purchase volume of 50 appraisals per month, individual framework agreements are concluded, enabling even more efficient processing. A central building block here is the DMS API. This interface allows appraisal orders to be initiated directly from the dealer management system, with results fed automatically back into the vehicle file.

This significantly reduces administrative effort and minimizes sources of error in data transfer. In addition, fleet operators can continuously monitor the condition of their fleet and precisely track residual-value trends. Standardization of appraisals ensures that valuation results remain comparable across different locations. Dealers also benefit from the DIAVAG quality seal, which they can use in online listings to strengthen the trust of potential buyers. Since DIAVAG acts as an independent third party, the seal carries significantly more weight than a description of condition provided solely by the dealer. This speeds up vehicle turnover times and optimizes margins in the used-car business.

The world of mobility and technical assets is undergoing rapid change. DIAVAG meets this dynamic with a consistent focus on digital excellence and regulatory compliance. Preparation for the EU Battery Passport is a prominent example. From 2027, all batteries with a capacity over two kilowatt-hours must carry digital proof of their origin, composition, and condition. DIAVAG is already integrating these requirements into its inspection processes today. The use of blockchain technology to secure appraisals also demonstrates this technological edge. Through the notarial hash on the Polygon blockchain, an immutable link is created between the physical asset and its digital appraisal.

Compliance with GDPR and storage of all data within the EU are a given for DIAVAG as a brand of CITO GmbH, headquartered in Hamburg. This provides the necessary legal certainty for B2B customers in particular when handling sensitive vehicle and customer data. The continuous development of the hardware cases and software algorithms ensures that future vehicle generations and new asset classes can also be assessed with precision. With the planned nationwide rollout in 2026, DIAVAG will further consolidate its position as the leading provider of mobile, standardized value appraisals at a fixed price. The goal always remains the same: making independence, transparency, and the highest professional quality accessible to every customer.