The essentials
- 1Mobile vehicle appraisers offer a flexible alternative to stationary inspection centers and repair shops on weekends.
- 2Transparent fixed-price models for all asset classes ensure maximum planning certainty in valuation.
- 3The Premium Battery Test is essential for electric cars and home storage systems for accurate valuation.
In the context of a time-critical transaction, on-site verification of assets is essential even on weekends. An investment professional inspects the physical assets, with complete documentation of history being crucial for risk assessment. Since classic repair shops and inspection centers are usually closed on weekends, a mobile appraiser is the only solution for making a well-founded decision on site. The DIAVAG appraiser arrives on time, equipped with calibrated hardware such as the paint thickness gauge and the OBD2 scanner. The technical inspection is completed in under 15 minutes. The BVSK-compliant appraisal is delivered digitally as a PDF the same day, signed by a senior inspector.
Availability of Vehicle Appraisers on Weekends
Finding a vehicle appraiser on weekends is often difficult, since traditional inspection organizations such as TÜV or DEKRA only open their stations to a limited extent on Saturdays and not at all on Sundays. For private individuals planning a transaction outside regular working hours, this creates a logistical gap. A mobile service like DIAVAG closes this gap by sending appraisers directly to the vehicle's location. This can be the home garage, a dealer's yard, or a public parking lot.
The advantage lies in scheduling flexibility. While stationary providers often have lead times of several weeks, DIAVAG's digitized system enables appointments within 24 hours. This is particularly critical for M&A transactions, where quick decisions are needed to avoid losing attractive offers to other interested parties. The appraiser conducts the entire inspection independently, without necessarily requiring a lift or a workshop environment. The mobile equipment in the standardized hardware case covers all relevant technical inspection points.
Mobile Service as an Efficient Alternative to the Workshop
A key aspect of the DIAVAG model is mobility. The appraiser comes to the asset, minimizing the effort for the customer. There is no need for transfer costs, temporary license plates, or the time spent traveling to an inspection center. In the regions of Hamburg, Berlin, and Munich, no additional travel fees are charged, making the cost structure transparent and predictable. This approach is available not only for cars but for over 30 asset classes, including boats, cargo bikes, and home storage systems.
The on-site inspection typically takes less than 15 minutes. This standardized process is supported by specialized software that guides the appraiser through a standardized workflow. Every step, from identifying the vehicle identification number to documenting paint damage, is precisely defined. This ensures that appraisal quality always meets the high BVSK standard, regardless of location. For the customer, this means maximum convenience combined with the highest technical rigor.
Transparent Fixed Prices for Maximum Planning Certainty
Unlike many freelance appraisers who bill by the hour or as a percentage of vehicle value, DIAVAG relies on a clear fixed-price model. A standard valuation report for cars, boats, or micromobility assets is offered at a transparent fixed price. This price includes travel within the region, the on-site technical inspection, and preparation of the digital appraisal. There are no hidden fees or surcharges for weekend appointments.
For more complex assets such as electric cars or residential PV storage systems, an extended fixed-price tariff applies. This premium tariff additionally includes the Premium Battery Test, an in-depth diagnostic of the energy storage system. For commercial customers, such as car dealers or fleet operators requiring more than 50 appraisals per month, individual terms are offered. These can be integrated directly into existing Dealer Management Systems (DMS) via an API connection. Price stability ensures that buyers and sellers can accurately budget for the cost of valuation in advance.
Technical Precision Through Calibrated Hardware
The quality of an appraisal depends on the equipment used. Every DIAVAG appraiser carries a hardware case worth auf Anfrages, specially assembled for mobile inspection. The technical analysis relies significantly on the OBD2 scanner, which delves deep into the onboard electronics and reads out the fault memory as well as real-time parameters. This is especially important for uncovering hidden defects that would not be apparent during a simple test drive.
A paint thickness gauge is also used to identify repainting and repaired accident damage. Vehicles are often declared accident-free even though filler is hidden beneath the paint. The appraiser also checks tire tread depth and uses a digital multimeter for electrical systems. Standardized photo documentation rounds off the process, ensuring tamper-proof evidence. All devices are calibrated and meet current industrial requirements for technical inspections.
EV Valuation on Weekends: The Premium Battery Test
When buying a used electric car on a weekend, battery condition is the most important criterion for market value. Conventional inspection centers often only offer a superficial diagnostic. DIAVAG integrates the Premium Battery Test as standard in every EV appraisal for auf Anfrages. This determines the State-of-Health (SoH), which indicates the remaining capacity compared to new condition. Cell balance and internal resistance are also analyzed to assess the battery's long-term stability.
This data is crucial, as the battery can account for up to 50 percent of an electric vehicle's total value. With a view to the upcoming EU Battery Passport, which becomes mandatory from February 2027, DIAVAG already offers future-proof documentation today. Buyers thus gain certainty that they are not investing in a vehicle with a worn-out energy storage system. Sellers, in turn, can justify a higher sale price through a certified appraisal, since the battery's quality is documented in black and white.
Legal Certainty and Independence of the Appraisal
A decisive factor for the usability of an appraisal is the independence of its author. DIAVAG does not sell vehicles, broker insurance, or perform repairs. This strict separation guarantees that the appraisal is prepared objectively and without bias. The appraisers are qualified to BVSK standards, and the organization operates as an inspection body under ISO/IEC 17020 Type A and meets the highest security standards such as SOC 2 Type II, representing the highest level of independence.
Every PDF appraisal is finally reviewed and signed by a senior inspector, with each finding offering complete source traceability back to the measurement record. This makes the documents legally sound for occasions such as inheritance, divorce, or insurance cases. In legal disputes, the appraisal serves as a well-founded basis, though a lawyer or notary should always be consulted for specific legal questions. Optionally, the appraisal can be secured with a notarial hash on the Polygon blockchain, making subsequent data manipulation technically impossible. This offers additional protection for all parties involved.
Asset Diversity: Appraisals for Boats and Home Storage Systems
While many appraisal services focus exclusively on cars, DIAVAG covers over 30 different asset classes. This is particularly relevant on weekends, for example when inspecting a sports boat in the harbor or when a home sale includes a residential PV storage system. For boats and yachts, the mobile service offers inspection directly at the mooring, massively reducing the logistical effort for the owner. Specialized inspection procedures are also used here to assess the technical condition of the hull and drive system.
For home storage systems, valuation is often complex since they are permanently integrated into the building's technical systems. A DIAVAG appraiser assesses the capacity and safety of the storage system on site. This is an essential part of real estate transactions to correctly reflect the overall value of the building's technical systems. Standardized processes are also available for construction and agricultural machinery as well as micromobility assets such as cargo bikes and e-scooters. This breadth of expertise makes DIAVAG a universal partner for valuing high-value technical goods.
The Process: From Appointment to Finished PDF
The process begins with an online booking, in which the customer specifies the location and desired time window. Within 24 hours, the appraiser appears at the agreed location. The vehicle is identified via the vehicle identification number (VIN), followed by a systematic inspection of all assemblies. The use of digital checklists ensures that no detail is overlooked. Once the physical inspection is complete, the data is transmitted encrypted to headquarters.
There, evaluation is carried out by experienced senior inspectors who finalize the appraisal. The customer receives the finished PDF document by email the same day. This fast turnaround enables significant time savings; for instance, a Big Four advisory partner was able to shorten commercial due diligence from three weeks to five days, allowing transactions to be completed without unnecessary delays. The appraisal contains a detailed list of all findings, a market value analysis, and comprehensive photo documentation. This puts all facts transparently on the table, sustainably strengthening trust between buyer and seller.
Coverage Areas and Future Rollout
Currently, DIAVAG's mobile service focuses on the regions of Hamburg, Berlin, and Munich. In these metropolitan areas, comprehensive coverage is guaranteed, so that even short-notice requests on weekends can be reliably served. The high density of appraisers in these areas makes it possible to consistently meet the promised 24-hour appointments. Customers in these cities also benefit from the waived travel fee within the city area.
A nationwide rollout is planned for 2026 to make the service available across all of Germany. DIAVAG relies on a partner model, in which independent appraisers can purchase the standardized hardware case and software. This ensures that the high quality and consistent standards are maintained even in the wider rollout. The goal is to establish mobile vehicle valuation as a new standard in the used-car market and make access to professional appraisals as simple as possible.
Frequently asked questions
- Does a weekend vehicle appraisal appointment cost extra at DIAVAG?
- No, DIAVAG works with a fixed-price model. Prices depend on the asset class and remain the same whether the appointment is on a weekday or a Saturday.
- In which cities is the weekend service available?
- DIAVAG currently offers the mobile service in the regions of Hamburg, Berlin, and Munich. A nationwide rollout is planned for 2026.
- How quickly do I receive the finished appraisal?
- The on-site inspection usually takes less than 15 minutes. The finished, BVSK-compliant PDF appraisal is delivered digitally the same day.
- Is the battery in electric cars checked in detail on weekends?
- Yes, for EVs the Premium Battery Test is included in the premium package. Cell balance, capacity, and charging curve are analyzed to determine the State-of-Health (SoH).
- Is DIAVAG's appraisal admissible in court?
- The appraisals are BVSK-compliant and signed by senior inspectors. They are based on objective data and ISO standards, making them legally sound for insurers, inheritance cases, or divorces. For specific legal disputes, you should consult a lawyer.
- Do I have to bring the vehicle to an inspection center?
- No, DIAVAG is a purely mobile service. The appraiser comes directly to the vehicle's location, whether that's a garage, yard, or harbor.
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