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Glossary

ACRISS code

The four-letter code classifying each vehicle by size, body, transmission and air conditioning.

The ACRISS code is the industry standard for describing a vehicle in four letters. It appears constantly on comparison sites and bookings, and reading it saves surprises.

What each letter means

1st — Category: M mini, E economy, C compact, I intermediate, S standard, F full size, P premium, L luxury.
2nd — Body: B 2/3 doors, C 2/4 doors, D 4/5 doors, W estate, V people carrier, F SUV.
3rd — Transmission: M manual, A automatic.
4th — Fuel and air conditioning: R petrol with A/C, N petrol without A/C, D diesel with A/C.

So a CDMR is a compact, 4/5 doors, manual, petrol, with air conditioning. An IFAR would be an intermediate SUV, automatic, with A/C.

Why it matters

Because you book a category, not a specific model. The "or similar" next to the car name means any vehicle sharing the same ACRISS code, which can be quite different from the one in the photo.

How we do it at Neptuno

We work with plain categories — economy, compact and SUV/estate — listing the usual models in each: Seat Ibiza or VW Polo for economy, Seat León or VW Golf for compact, Nissan Qashqai or Seat Ateca for SUV. All with air conditioning.

Hire without the small print.

Zero-excess insurance, no deposit, unlimited kilometres and free cancellation up to 72h before.

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