Auto-Sleeper Fiat Engines

New for 2024 the Auto-Sleeper range is built on a Fiat chassis with the Ducato Multijet3 2.2 litre 140 Bhp powertrain, this engine offers top performance, extreme reliability with reduced fuel consumption and CO2 emissions thanks to this new generation engine designed specifically for campervans.

All Fiat models are available with a range of Automatic engine options, (140hp and 180hp power levels), all with reduced noise level, weight and best in class fuel consumption.


AdBlue, unlike diesel fuel, it is not injected into the engine but, directly into a specially modified part of the motorhomes exhaust system.

In fact, a three stage cleansing process specifically targets the pollutants of diesel combustion, removing hydrocarbons and carbon monoxides by up to 90% and eliminating 99.9% of particulates

Motorhomes with Euro 6 engines

Stage One

  • the oxidation catalytic converter eliminates the HC and the CO2. Therefore, then transforming them into water (H2O) and carbon dioxide (CO2).

Stage Two

  • the SCR (Selective Catalytic Reduction) transforms the nitrogen oxides (NOx) into water. Thereafter, the nitrogen (N2), which is the main constituent of air (78%), due to the addition of AdBlue® (mixture of urea and water).

Stage Three

  • the Particulate Emission Filter eliminates 99.9% of the particulates by number.

Answers from Auto-Sleepers.

What happens if my Ad Blue® runs out?

Well, first do not panic. If your AdBlue® runs out, your vehicle will continue running until switched off, then it will not re-start until AdBlue is topped up again and the system re-set by Peugeot.

Will I get a warning?

Yes, the driver will see several count-down style warnings on the dash prior to running out. These warnings commence several hundred miles prior to run-out however, to avoid running out please keep a lookout for your UREA warning lights. So, for example when there is 1,500 miles left in the tank, you will get a warning. This is in the form of an orange UREA warning light and audible warning to alert the driver.

In fact, at 350 miles there is red UREA warning light and a service warning light. Also, again an audible and verbal warning. Also, be aware that if the driver continues until the tank is completely empty, once the vehicle is switched off, it will not restart until reset by a Fiat dealer.

How far will a tank full go?

The average annual motorhome mileage is between 6,000 – 8,000 miles, the AdBlue® tank, if full is more than capable of these sorts of distances. Also, on the annual service the Fiat dealership are able to top up your AdBlue® as part of the service.

Therefore, for the vast majority of motorhome customers, there will be no need to fill up between services. However, a top up is easy from your Fiat dealership or most service stations.

Do we have to use a Peugeot specific AdBlue®?

No, there is only one type of AdBlue®, which is on sale from either a Fiat dealership or most fuel stations.

The cost for AdBlue®?

As the average annual motorhome mileage is relatively low. So, with the majority of customers the AdBlue® will be part of the maintenance at the annual service.

Is the AdBlue® tank easy to locate and fill?

Yes. The 15-litre tank is accessible from the outside and is under the fuel filler.