D1 Grand Prix Drifting Championship

D1 Grand Prix Drifting Championship (D1GP)

Definition and Historical Standing
The D1 Grand Prix, commonly abbreviated as D1GP, is a world-class professional drifting series sanctioned by the Fédération Internationale de l'Automobile (FIA). Established in Japan in 2000, it is widely hailed within the motorsport fraternity as the "F1 of drifting". D1GP was co-founded in 2001 by Daijiro Inada, a pioneering figure in Japan's car tuning scene and founder of Option magazine, alongside Keiichi Tsuchiya, the legendary drift king who inspired Initial D. Tracing its roots back to earlier amateur grassroots drift meets, the championship was conceived to transition underground street drifting into an organised, strictly regulated professional motorsport. Alongside America's Formula Drift (FD), the Drift Masters European Championship, and Australia's Drift Nationals, D1GP stands as one of the four premier global drift series, boasting the longest history and the widest international following.

Core Competition Formats: Solo Run (Tanso) and Tandem Battles (Tsuiso)
D1GP's sporting format is built around two fundamental sessions. Tanso (solo run) is a single-car judged run where drivers navigate the circuit individually. Judges score their runs based on drift angle, speed, line trajectory, and style, with the higher score across two attempts determining the qualifying order. Tsuiso (tandem run) is a head-to-head knockout stage where qualified drivers are paired off according to their seeding in a two-round, lead-and-chase format. The lead car is tasked with delivering an optimum drift line and angle, whilst the chase car must mimic the lead car's line and stay as close as possible without dropping out of drift; if the chaser can maintain close proximity whilst matching or exceeding the leader's angle, it gains the advantage. If the judges are unable to separate the competitors after two runs, a sudden-death run-off ("One More Time") is called.

DOSS Electronic Scoring System
D1GP employs the proprietary DOSS (Drift Official Scoring System), an advanced electronic scoring setup developed to assist judges in evaluating telemetry data that is otherwise difficult to measure accurately with the naked eye. The system calculates drift angle, entry/corner speed, and line deviation in real time, relaying this live data seamlessly to both drivers and spectators to ensure total fairness, impartiality, and transparency throughout the judging process. In Tanso qualifying, the automated DOSS score takes precedence, with human judges assessing style and line compliance; in Tsuiso tandem battles, judges decide the match-up based on DOSS telemetry, including vehicle proximity, relative drift angle, and carrying speed.

Competition Cars and Technical Specifications
D1GP machinery consists primarily of heavily modified rear-wheel-drive (RWD) platforms, with most competition cars pushing well over 850 hp from extensively tuned powertrains. The technical regulations offer considerable freedom, permitting full engine swaps, stroker builds, and oversized turbo conversions. A prime example is the GR Corolla D1 build showcased at the Toyo Tires stand during the 2024 season: its factory all-wheel-drive (AWD) layout was converted to RWD, with a legendary 2JZ-GTE inline-six shoehorned into the bay, stroked to 3.4 litres, and paired with an HKS GT75100-BB turbocharger kit to unleash a staggering 1,360 hp. The Nissan S15 Silvia remains the most successful chassis in D1GP history, having propelled five different drivers to overall championship crowns.

Growth of the China Series
In 2016, D1GP officially expanded into China with six rounds across three stops in Shanghai, Beijing, and Guangdong, marking the convergence of the Chinese drifting scene with top-tier international competition. In June 2024, Yasen International took full control of the China Series operations, running a major round in Dongguan in October that seamlessly integrated a competitive drift event with a large-scale automotive aftermarket and tuning expo. In the 2025 season, Chinese drivers Zhang Shengjun, Xue Kun, and Wang Qi made a clean sweep of the podium in the overall championship standings, showcasing the rapid progression of local talent. As the grand finale of the season, the three-day Dongguan stop drew roughly 100,000 trackside spectators and generated over 400 million online impressions.

Domestic Japanese Championship Circuit
The domestic Japanese championship serves as the undisputed backbone of D1GP. The 2026 season marks the series' milestone 25th anniversary, featuring 10 rounds contested across five double-header weekends. The campaign kicks off in May at the Aichi Sky Expo before heading to the iconic Tsukuba Circuit (June), Ebisu Circuit (September), and Autopolis (October), before wrapping up in November at the Odaiba street circuit in Tokyo. Promoted and managed by Sunpros Co., Ltd., the championship is fully sanctioned under the Japan Automobile Federation (JAF) semi-national competition framework and holds official status as the All Japan Drift Championship.

Iconic Drivers and Classic Match-ups
D1GP has produced a host of legendary wheelmen over the decades. Daigo Saito made history as the first driver to secure dual championship crowns in both D1GP and the US Formula Drift series, subsequently clinching another D1GP overall title in 2016. Three-time D1GP overall champion Masato Kawabata dominated the Beijing stop between 2016 and 2018, securing back-to-back Tanso and Tsuiso double victories. Meanwhile, Zhang Shaohua made history as the first Chinese competitor in D1GP, famously beating Daigo Saito in the final battle of the 2017 Shanghai round to become the first Chinese driver to take a top-step podium in the series. Back in 2007, an infamous high-speed collision between Daigo Saito and Masato Kawabata during the Top 8 Tsuiso battle at Fuji International Speedway went down as one of the most iconic moments in D1GP history.