What are SIPP codes and why are they useful?
SIPP codes are strings of letters, used to summarize the main characteristics of vehicles through a standard coding, common to all agencies.
The code is usually 4 characters long, for example "CDMR": compact, 4-door, manual transmission and air conditioning.
A car with the CDMR code is shared by several models, such as Ford Focus, Fiat Stilo or Hyundai Matrix.
Why use SIPP codes?
SIPP codes make it easier to compare vehicles by grouping similar ones together. There are thousands of different cars in the world, so a system is needed to organize them.
Will I have the specific model I reserved?
When you book a vehicle, you are not guaranteed to receive the one you booked, but rather you'll receive one with the same SIPP code or, in some cases, higher. It's quite common to receive a different model, so don't hope to find that specific brand or model. In fact, it may happen that the booked vehicle is being repaired or that all those available have already been picked-up. However, you will always receive a vehicle of the same caliber, which is exactly what the SIPP codes ensure.
How to use SIPP codes?
The 4 letters describe the vehicle type, the number of doors, the transmission or whether it has air conditioning:
First letter (vehicle dimensions)
Second letter (Number of doors)
Third letter (transmission and traction)
Fourth letter (power and air conditioning)
Abuse of SIPP codes
Rental agencies are encouraged to use agreed SIPP codes, but they are not obligated to do so. If agencies create their own codes, unification fails, making it more difficult for consumers to compare cars.
Unfortunately, some car rental companies create their own SIPP code list in some circumstances. We always encourage our partners to use standard SIPP codes.