The relative expense of these cars depends on which models are being compared, as well as current market conditions. However, as a general rule, here is one possible ranking from the most expensive to the least expensive based on the listed brands:

1. Ferrari 
2. Lamborghini 
3. Porsche 
4. Mercedes
5. Audi.
Ferrari, Lamborghini, Porsche, Audi, Mercedes.
### Instruction:
Rank the following five cars from the most expensive to the least expensive.

### Input:
Ferrari, Lamborghini, Porsche, Audi, Mercedes.

### Response:
