Chester Kieffer

Chester Kieffer (born 23 July 2006) is a Luxembourgish racing driver who last competed in Porsche Carrera Cup France for CLRT Schumacher.

Career

Formula 4

Formula 4 UAE Championship

Kieffer began karting at 15 and made his single-seater debut in the 2024 Formula 4 UAE Championship for X GP. He only contested the third round of the series at the Dubai Autodrome, where his highest result was a fifteenth in the first race. Kieffer finished the drivers championship in twenty-ninth.

French F4 Championship

His main campaign of the year was in the 2024 French F4 Championship, where he enjoyed success in the first half of the season. Kieffer got his first ever pole position, podium and win in the first race of the second round at Lédenon and became the first Luxembourger to win in a FIA sanctioned single seater series. In the third race he got this second podium, in form of a second place. He got his second win in the first race of the next round at the Circuit de Spa-Francorchamps.

After Spa-Francorchamps, he only mustered three points finishes – a highest of sixth and the Nürburgring – throughout the rest of the season. Despite this, the Luxembourger managed to hang onto fourth in the drivers championship and finished his maiden campaign with two wins, one pole position, one fastest lap, three podiums and 116 points.

F4 British Championship

Kieffer made a cameo in the sixth round of the 2024 F4 British Championship with Xcel Motorsport at Circuit Zandvoort, the only international round in the season. He finished a highest of nineteenth in the second race and got four bonus points after he overtook four cars. Kieffer ended the drivers championship in thirtieth with four points.

FIA Motorsport Games

He drove in the FIA Motorsport Games Formula 4 Cup for Team Luxembourg and finished sixth in the main race.

Porsche competition

2025

For the 2025 season, he switched from Formula 4 to one-make Porsche racing and kicked off his season in the 2025 Porsche Sprint Challenge Southern Europe with CLRT Schumacher, where he won the rookie title and finished third in the main championship after claiming two pole positions in the first round at Algarve, and achieving his maiden podium in the second round at Estoril.

He competed full-time in the 2025 Porsche Carrera Cup France with CLRT Schumacher where he got his only podium in the second race of the third round at the Circuit de Spa-Francorchamps with a third place. Kieffer consistently finished in the top-ten throughout the season, beating Enzo Joulié to the rookie title and ending the main championship in sixth.

Karting record

Karting career summary

Racing record

Racing career summary

Complete Formula 4 UAE Championship results

(key) (Races in bold indicate pole position; races in italics indicate fastest lap)

Complete French F4 Championship results

(key) (Races in bold indicate pole position; races in italics indicate fastest lap)

Complete F4 British Championship results

(key) (Races in bold indicate pole position; races in italics indicate fastest lap)

Complete Porsche Carrera Cup France results

(key) (Races in bold indicate pole position) (Races in italics indicate fastest lap)

^*Season still in progress.