A Geneva chauffeur service is private transport booked in advance at an agreed price, carried out by a VTC company authorised by the canton's PCTN (Service de police du commerce et de lutte contre le travail au noir) under the LTVTC, Geneva's law on taxis and chauffeur-driven vehicles. By law the car cannot cruise for passengers or be hailed, and the fare is fixed before the journey starts. Whether you need a Geneva Airport transfer, an hourly car service between meetings or a black car to a private bank, the vehicle class, the chauffeur and the price are settled before the day.
That matters most on the days Geneva gets difficult. When the Route de Ferney stalls at 08:00, when the Pont du Mont-Blanc is the only way across and everyone wants it, or when a February Saturday puts half of Europe on the road to the Alps, a reserved Geneva car service costs what it cost when you booked. The 8.1 percent Swiss VAT, the motorway vignette and any airport access or parking charge for your pickup are already in the figure, written in francs.
The same booking reaches well past the city. GVA to the Palais des Nations for delegations, GVA to Lausanne along the lake, the ski transfers that fill the winter, and the French sector for the Pays de Gex. If a metered taxi is the comparison you are making, the Geneva taxi alternative sets the two side by side, and organisations moving staff through the city every month can put it all on corporate travel in Geneva with central billing.