The Key
Top of the Classic Car World
The Key, Top of the Classic Car World collects stories, data and events that keep their own value over time: everything an aficionado should know.

A Timeless Passion, Refined
The Key 2024–2025, sixth edition
The sixth edition of The Key, TCCT’s acclaimed yearbook and your personal compass through the world of classic cars. This volume continues our mission to capture the beauty, relevance, and legacy of the most exceptional automobiles in history – and those who preserve them.
An enriched Top 100 Collectors ranking, with seven new entries and exciting movements throughout the list. From a unique look at American automotive icons to in-depth reflections on brand evolution, The Key 2024/25 blends hard data with emotional storytelling.
- Format
- Softcover
- Pages
- 244
- Language
- English
- Size
- 235 × 260 mm
Fresh data.
New perspectives.
Auction results only tell part of the story, as many sales are made directly between buyer and seller. The Classic Car Trust looks at the top end of the classic car world itself, with data from more than 200 collectors who between them own thousands of the most important classic cars on the planet.
- Auction data points
- 256,000
- analysed for The Key 2024–2025
- Vehicles
- 4,000+
- tracked across the auction market
- Events
- 1,200
- from all over the world
- Collectors, ranked
- Top 100
- seven new entries in this edition
- Collectors
- 200+
- whose collections form the research base
- Editions
- 6
- published since 2018
Inside the analysis
The Top 100 Collectors
The ranking of the world’s most influential collectors, one by one.
Auction market
Trends and phenomena from the results of auctions worldwide.
Brand desirability
How the appeal of the great marques shifts over time.
Age demographics
Who collects today, and who will collect tomorrow.
Geographic trends
Where the classic car world is growing and where it is moving.
Private collections
Visits to collectors who opened up their garages.
The next generation
What young Europeans, Asians and Americans think about the car’s future and its past.
Figures from The Key 2024–2025; research base and topics as described in the editions since 2018.
Earlier editions

The Key 2022–2023
A Love Affair from the Past with a Future
5th edition · 292 pages
View in shop
The Key 2021
Both a book and a valuable document
280 pages
View in shop
The Key 2020
News, data and images
280 pages
View in shop
The Key 2019
A market approaching a crossroad
View in shop
The Key 2018
The first edition
View in shop
All editions are available at shop.tcct.com.