The auto park was at capacity as the Liverpool International Horse Show was about to kick off shortly after the fire broke out and as all vehicles were affected, many were left stranded in the city as the emergency services from across the North West brought the situation under control.
The aftermath of the blaze was captured in the photographs released by Merseyside Fire and Rescue Service and shows the shells of the blackened vehicles.
Investigators believe an accidental fire within one vehicle caused others to ignite at around 5 p.m. local time (noon ET) on Sunday. "Are you joking?' It was frightening, we could hear the bangs of auto windows exploding".
Merseyside Police said that fire appeared to be an accident.
Sue Wright, wife of former England footballer Mark Wright, told Britain's Press Association of fleeing the auto park as "an old vehicle exploded".More news: Kylie Jenner's Baby Bump is MISSING in Latest Fashion Campaign Photoshoot
A witness said the fire started in an old Land Rover before rapidly spreading, burning every vehicle inside the multi-storey carpark next to the Echo Arena.
Ms Wright helped ensure 80 horses being stabled on the ground floor of the auto park were led to safety.
The fire service said 14 engines were at the scene tackling the blaze and it was guarding against the risk of the building collapsing. They urged owners to contact their insurance companies.
"I am very proud of our own teams who pulled together in the most demanding of circumstances, and managed to quickly and calmly evacuate all horses from the venue in a safe and controlled manner".
The arena said Liverpool City Council had opened a nearby reception centre for those unable to get home or needing temporary shelter.
Victoria and Mark, who live near Oswestry, were in the city for the Liverpool International Horse Show. "A big thank you to everyone who called to offer help", he added.