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Order an Appraisal: Mobile Expert Service at a Fixed Price

Independent value appraisals for cars, EVs, boats, and home energy storage

DIAVAG Appraisers·
Order an Appraisal: Mobile Expert Service at a Fixed Price

The essentials

  • 1DIAVAG offers mobile on-site inspections within 24 hours at a fixed price of auf Anfrages or auf Anfrages.
  • 2The Premium Battery Test delivers precise state-of-health (SoH) data for EVs and home energy storage systems.
  • 3All appraisals are BVSK-compliant, ISO-certified, and signed by senior inspectors.

Tuesday, 2:00 PM, a commercial yard in Berlin-Spandau. A used Audi e-tron is about to change owners. Before payment, the buyer wants to order an independent appraisal to verify the condition of the high-voltage battery. The DIAVAG expert arrives punctually. He needs no lift and no workshop appointment. With the mobile hardware case, he carries out the Premium Battery Test directly on site. In under 15 minutes, all the data is captured. This scenario describes the modern standard of value assessment: mobile, digital, and professionally grounded.

The Appraisal Ordering Process: Digital and Efficient

When you order an appraisal today, you expect more than just an estimate based on list prices. DIAVAG's process is designed for maximum speed and precision. After placing an order through the digital interface, scheduling takes place within 24 hours. This is particularly important in time-critical situations such as a vehicle sale, an inheritance matter, or a divorce. The expert comes directly to the asset's location. This can be a private garage, the yard of a trade business, or a berth in the harbor. In the regions of Hamburg, Berlin, and Munich, travel is included in the fixed price.

On site, the appraiser carries out a standardized workflow. This process typically takes less than 15 minutes. By using calibrated hardware, subjective assessments are replaced with objective data. Documentation is digital and processed in real time. You receive the completed PDF appraisal the same day. This efficiency sets the modern appraisal service apart from classic models, where appointments often have to be booked weeks in advance and report preparation takes several days. Ordering an appraisal with DIAVAG means gaining planning certainty through clear timelines.

Seven Asset Classes: An Appraisal for Every Valuable Object

Most providers limit themselves to classic combustion-engine vehicles. However, if you want to order an appraisal that goes beyond the standard car, many experts reach their limits. DIAVAG covers seven different asset classes. Alongside cars and EVs, these include boats, construction and agricultural machinery, cargo bikes, e-scooters, and stationary home energy storage systems. Each of these classes requires specific expertise and adapted testing methods. A combine harvester is assessed by different criteria than a sailboat or a lithium-ion storage system in a single-family home.

Especially for complex assets such as construction and agricultural machinery, on-site inspection is a decisive advantage. Transporting an excavator to a testing facility would involve enormous costs and logistical effort. The mobile service removes these hurdles. Demand for professional valuations is also growing in the field of micromobility, for example for high-value cargo bikes or e-scooters. Insurers and buyers increasingly require proof of actual market value and technical condition. By standardizing its processes, DIAVAG ensures that every appraisal, regardless of asset class, meets the same high quality requirements and is finally signed off by a senior inspector.

Fixed-Price Guarantee: Transparency Instead of Hidden Costs

A major obstacle to ordering an appraisal has historically been unclear pricing. Many experts bill by the hour, plus travel costs and drafting fees. This makes the final amount hard for the customer to calculate. DIAVAG instead relies on a transparent fixed-price model. For standard assets such as cars, boats, cargo bikes, or e-scooters, the price is auf Anfrages. This amount covers the entire on-site inspection and preparation of the BVSK-compliant appraisal. There are no hidden fees for travel within the regions.

For technically more demanding assessments that require an in-depth battery diagnosis, the premium rate of auf Anfrages applies. This covers EVs, hybrid vehicles, and home energy storage systems. This price includes the Premium Battery Test, which goes far beyond simply reading the fault memory. For commercial customers, such as car dealers or fleet operators, who order more than 50 appraisals per month, individual terms are agreed. This price stability allows private individuals and businesses to plan the cost of a valuation precisely into their budget in advance. Independence also means that the price does not depend on the determined vehicle value, which underscores the objectivity of the appraiser.

Technical Precision Through Calibrated Hardware

Anyone wanting to order an appraisal relies on the technical accuracy of the data. The DIAVAG expert carries a special hardware case optimized for mobile inspection. A central element is the OBD2 scanner, which looks deep into the onboard electronics and reads out not only current faults but also historical data. This is crucial for identifying hidden defects or odometer tampering. This is complemented by a coating-thickness measuring device. It can be used to determine beyond doubt whether a vehicle has been repainted or whether there is filler material under the paint from a previous accident.

In addition, tread-depth gauges for the tires and digital multimeters for testing electrical systems are used. The entire photo documentation follows a strict standard to capture all value-relevant areas of the asset without gaps. This combination of physical inspection and digital data capture ensures a high degree of evidentiary value. Unlike purely online valuations, which are based only on statistical values, the on-site inspection provides a real picture of the condition. The hardware is regularly calibrated to ensure compliance with ISO/IEC 17020 Type A standards, which makes the appraisals usable for insurers and legal disputes as well.

Legal Certainty: BVSK Standard and ISO Certification

An appraisal is only as valuable as its acceptance by third parties. If you order an appraisal to present to an insurer, a court, or as part of an inheritance matter, the qualification of its author is crucial. All DIAVAG experts work according to the guidelines of BVSK (the Federal Association of Independent Automotive Experts in Germany). This guarantees a high professional standard and adherence to ethical principles. In addition, the service is organized as an inspection body under ISO/IEC 17020 Type A, which represents the highest level of independence.

Every PDF appraisal produced is reviewed and signed by a senior inspector. This ensures that no formal errors occur and that the assessment was carried out methodically correctly. In legal matters, for example under the JVEG (Judicial Remuneration and Compensation Act), these appraisals serve as a solid basis. However, it is expressly noted that DIAVAG does not provide legal advice. For specific legal issues, you should always consult a lawyer or notary. DIAVAG's independence is a central advantage here: because the company neither buys vehicles nor carries out repairs, it has no vested interest in any particular valuation outcome. This significantly strengthens the customer's position vis-à-vis insurers or buyers.

EV Special: Why the Premium Battery Test Is Essential

For electric vehicles, the battery is the most expensive component and often accounts for up to 40 percent of the total value. Anyone wanting to order an appraisal here should not settle for a superficial visual inspection. DIAVAG's Premium Battery Test delivers detailed information about the battery's state-of-health (SoH). It analyzes parameters such as cell balance, actual kWh capacity, charging curve, and internal resistance. A simple glance at the range display on the dashboard is not enough, as this can often be skewed by driving profiles.

The importance of this data will only increase further with the upcoming EU Battery Passport starting in February 2027. DIAVAG is already prepared for these regulatory requirements today. A certified battery test protects the buyer from costly mistakes and allows the seller to achieve a fair price for a well-maintained vehicle. This test is also a standard part of the premium appraisal for stationary home storage systems used with photovoltaic installations. Since the service life of lithium-ion storage systems is limited, precisely determining the remaining capacity is a key factor in real estate transactions or warranty disputes. Without such a test, the value of an e-asset remains pure speculation.

B2B Solutions: Ordering Appraisals for Dealers and Fleets

For professional market participants such as car dealerships, leasing companies, or fleet operators, speed and scalability are crucial. When companies order appraisals on a large scale, they need seamless integration into their existing processes. DIAVAG offers a DMS API (Dealer Management System interface) for this purpose. This allows appraisals to be ordered directly from within the familiar software environment, with results automatically transferred into the vehicle file. This significantly reduces administrative effort and speeds up the entire marketing process.

From a volume of 50 appraisals per month, DIAVAG offers individual terms tailored to the specific needs of major clients. Residual-value tracking allows fleet managers to monitor the depreciation of their portfolio in real time and identify optimal sale times. In addition, independent experts can purchase the hardware case including the software solution at a list price of auf Anfrages to become part of the DIAVAG network. This standardization ensures that a dealer in Hamburg receives the same appraisal quality as a location in Munich, which massively increases internal comparability and transparency toward end customers.

Comparison of Appraisal Providers

When ordering an appraisal, customers can choose between different providers. The following table illustrates the differences between DIAVAG and classic inspection organizations as well as online estimators.

FeatureDIAVAGTÜV / DEKRAOnline Estimator
Mobile serviceYes (on site)Usually stationaryNo (data only)
Asset classes7 (incl. boat, storage)Focus on carsCars only
Premium Battery TestStandard (Premium)Mostly basic OBD onlyNone
Fixed priceauf Anfrage / auf AnfrageOften by effortFree / cheap
Legal certaintyHigh (BVSK / ISO)HighLow (no inspection)

While online estimators offer only a rough guide, TÜV and DEKRA, though highly reliable, are often inflexible regarding the inspection location and coverage of special assets such as boats or home storage systems. DIAVAG closes this gap through mobility and technical specialization.

Mobility as a Strategic Advantage in Value Assessment

The decision to order an appraisal often fails due to logistical effort. A vehicle has to be driven to a testing facility, which costs time and, for unregistered vehicles, requires temporary plates or a trailer. DIAVAG's mobile approach eliminates this effort entirely. The expert fits into the customer's schedule. This is especially advantageous for working professionals or businesses whose vehicles are in use during operating hours. The inspection can take place during a lunch break or directly on company premises.

In the regions of Hamburg, Berlin, and Munich, this service is already established, with a nationwide rollout planned for 2026. The independence of the mobile appraiser is preserved throughout, since he does not sell workshop services. He focuses exclusively on the neutral assessment. This separation of inspection and repair is a key quality feature. Anyone wanting to order an appraisal that holds up before insurers or buyers benefits from this clear structure. The combination of time savings and technical depth makes the mobile service the preferred choice for modern asset owners.

Frequently asked questions

What does it cost to order an appraisal?
A standard appraisal for cars, boats, or cargo bikes costs auf Anfrages. For EVs and home storage systems including the Premium Battery Test, the fixed price is auf Anfrages.
How quickly is the expert on site?
In the areas of Hamburg, Berlin, and Munich, you typically get an inspection appointment within 24 hours.
Which assets can be assessed?
DIAVAG assesses seven asset classes: cars, EVs, boats, construction and agricultural machinery, cargo bikes, e-scooters, and PV home storage systems.
Is the appraisal admissible in court?
Yes, the appraisals are BVSK-compliant and prepared according to ISO/IEC 17020 Type A standards, which qualifies them for insurers, inheritance matters, and legal purposes.
Do I need to drive to a workshop for the inspection?
No, the expert comes directly to the asset's location, whether a garage, yard, or harbor. No lift is required on site.
How do I receive the result of the inspection?
You receive the completed appraisal as a signed PDF document by email the same day as the inspection.
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