Bike box on airport transfer

gsk82 Posts: 3,517
edited February 2016 in Tour & expedition
Has anyone ever taken a bike box on an airport shuttle transfer? The terms limit luggage to a size a bit smaller than a bike box and i'm not sure if i should risk it. Even the pre bookable private taxis limit the size.

I'm flying to Malaga at the end of February and have uncharacteristically booked flights including my bike without thoroughly researching first.
"Unfortunately these days a lot of people don’t understand the real quality of a bike" Ernesto Colnago