There is no blanket answer to this question, because both providers have different strengths and cover different situations.
DEKRA is the market leader for main inspections (HU), valuation appraisals and accident assessments in Germany. The inspection takes place at one of around 480 branches — the vehicle has to be brought there. Prices for used-car inspections are not published consistently online; based on publicly available sources, a base amount from around €49 plus optional modules serves as a rough guide (as of May 2026, varies by region — please ask the branch directly).
ADAC offers its used-car inspection at selected test centres in certain cities as well as through a regional mobile inspection service. According to public sources, ADAC members typically pay from around €79, and non-members from around €109 — in each case depending on the package and regional club (as of May 2026, varies by region).
Anyone who needs a legally usable valuation appraisal, a DEKRA seal or a main inspection (HU) is in the right place at DEKRA. Anyone who, as an ADAC member, wants to benefit from the member terms and has an ADAC test centre within easy reach will find an established option there.
As a third possibility there is checkdenwagen: a service specialised in used-car purchases that sends the inspector straight to where the vehicle is — with no test-centre appointment, no membership, with a fixed price from €289 incl. VAT and travel as well as a digital photo report within 24 hours.
