Glossary of Terms

A list of the most often used measurements and what they mean:


Unladen Weight: the weight of the vehicle when it’s not carrying any passengers or fuel.

Kerbweight: the “ready to drive” mass of the car including 90% full of fuel, 68kg for the driver and 7kg of luggage.

GVW (Gross Vehicle Weight): The maximum allowable loaded mass of the car (vital to know to remain within the 3500kg limit).

MAM (Maximum Authorised Mass): the same as GVW above.

Towing Limit: the maximum weight the car is legally allowed to tow.

Gross Train Weight: the maximum weight of the fully-loaded car plus fully-loaded caravan. Displayed on the car’s VIN plate.

MRO (Mass in Running Order):  the unladen weight of the caravan including gas bottle but not personal effects. More details here.

MTPLM (Maximum Technically Permitted Laden Mass): the caravan’s maximum weight when fully loaded (vital to know to add to the car’s GVW).

Nose Weight: the down-force on the car’s tow-bar exerted by the caravan.

Your Car’s Weight Plate