Here is the full list of all 51 The Crew Motorfest trophies - there are 42 bronze, 5 silver, 3 gold and 1 platinum.
Unlock all The Crew Motorfest Trophies
Complete 15 Motorfest Events
Complete all three timelines on the Motorfest Main Stage
Complete your Motorfest welcome for the first time
Complete a Playlist for the first time
Complete 30 Challenges
Complete 6 Playlists
Win 5 custom events
Reach Level 15
Spend 1 Million Bucks
Own 30 Vehicles
Spend 24 Hours in The Crew Motorfest
Own a vehicle in 10 different vehicle categories
Reach maximum level on one vehicle
Become a Motorfest Legend for the first time
Complete 20 Photo Ops
Perform 31 Different Motorfest Feats
Use the fast travel feature for the first time
Chain a 15 actions combo with Dynamic Freestyle
Find and open a Treasure
Travel 40 Kilometers (25 miles) anywhere in Hawaii
Take 3 photos in the same session
Reach the summit of the volcano with a ground vehicle.
Fly under 5 differents bridges in the same session
Stay still for 1 minute on the beach in front of the Royal Hawaiian Hotel
Fly as high as possible.
Perform a donut move in the Ubisoft logo
Join, or form a Crew
Complete a custom event with a Crew of 4 players
Fully customize one vehicle (Visual parts and Livery)
Drive or Fly 5 Km in formation with a Crew member, in the same session
Participate in a Grand Race event
Complete a Summit Contest event
Participate in a Demolition Royale event
Destroy 3 vehicles in Demolition Royale
Overtake 12 players in the Grand Race
Submit 1 vehicle to the Custom show
Vote for 5 cars in the Custom show
Complete all activities of a Summit Contest
Complete 5 events in Main Stage Mode
Transform into a monster truck twice in a single game of demolition royale
Win by completing the event without hitting a wall, or track limits, driving in Ebisu Style
Complete a Speedtrap instance with a boat
Fly through the "Rule the Streets" inflatable donut with a plane
Equip your avatar with the casual tuxedo and drive an Aston martin car
Try to leave Hawaii (boat or plane) by reaching the limit of the map
Reach 88 MPH (142 Km/h) with the Delorean DMC-12 and use the rewind feature
Stay in a Car meet car for 10 seconds or more
Use up the rewind feature fully 1 time
Perform a donut move around the pineapple shop
Chain two bike backflips while in the air and use fast fav with a plane, before reaching the ground.