A car does Siegen to Frankfurt in roughly 1h 29 over 131 km. The drive is 131 km against 98 km as the crow flies, which is the ordinary shape of a German motorway journey. The difference from every other way of making the trip is that it starts at your address and ends at theirs.
The fare is fixed when you book, so a closed lane or a slow stretch costs you time and not money — there is no meter and no waiting charge. Pickup is any address in Siegen: a home, a hotel, an office, a venue. Drop-off is the exact address in Frankfurt, not the nearest station to it. The route crosses from Nordrhein-Westfalen into Hessen; the price covers the whole of it including tolls.
One vehicle the whole way, one price, and a departure time you choose rather than one a timetable chooses for you. Journeys this length are mostly booked the same day or the day before, and the car can be at the door within the hour in normal conditions. Arriving by air instead? Frankfurt Airport Transfers covers every destination we serve from the airport.
The two journeys a rail ticket does not include
A train time is measured Hauptbahnhof to Hauptbahnhof, and almost nobody starts or finishes at one. The real Siegen–Frankfurt journey by rail is usually three journeys: getting to the station with your bags, the train itself, and getting from the far station to the actual address — the last of which is a taxi at the far end, at a metered price, in a city you may not know. Those two legs are where the published time and the published fare both stop being the whole story. A private car removes them by starting and ending at the addresses instead, which is why the comparison is closer than a timetable makes it look.
Same-day returns and waiting time
At 131 km this is a route people commonly do twice in a day, and it is worth booking as a return rather than as two separate journeys. The driver can wait at the far end — for a meeting, a viewing, a hospital appointment, a signing — and bring you back, which is quoted as one fixed price at booking rather than billed by the hour while the car stands. For a short wait that is almost always cheaper than two one-way transfers, and it removes the part of the day nobody plans for: finding a car back at 18:00 in a city you do not live in.