Chester Kieffer (born 23 July 2006) is a Luxembourgish racing driver who competes in Porsche Supercup and Porsche Carrera Cup Germany for Schumacher CLRT.

Career Kieffer began karting at age 15 and made his single-seater debut in the 2023 Ultimate Cup Series Challenge Monoplace season finale at Paul Ricard, where he won all three races in the F4 class. Kieffer then contested round three of the 2024 Formula 4 UAE Championship for X GP at the Dubai Autodrome, where his highest result was fifteenth in race one.

Kieffer's main campaign of 2024 was the French F4 Championship, where he received backing from the Winfield Racing School and enjoyed success in the first half of the season. He got his maiden pole position, podium and win in round two at Lédenon and became the first Luxembourger to win an FIA-sanctioned single seater race. He picked up another podium in race three that weekend, before winning again in the next round at the Circuit de Spa-Francorchamps. After that, Kieffer only mustered three points finishes from the last 12 races – a highest of sixth at the Nürburgring. Despite this, Kieffer managed to hang onto fourth in the drivers' championship with 116 points.

Kieffer also made a cameo in round six of the 2024 F4 British Championship with Xcel Motorsport at Zandvoort, the only international round in the season, and scored four bonus points for overtaking four cars on his way to 19th in race two. In late 2024, Kieffer represented Team Luxembourg in the FIA Motorsport Games Formula 4 Cup at Paul Ricard and finished sixth in the main race.

Porsche Cup racing In 2025, Kieffer switched from Formula 4 to one-make Porsche racing and kicked off his season in the Porsche Sprint Challenge Southern Europe with CLRT Schumacher, where he claimed two pole positions at Portimão, a podium at Estoril, won the rookie title and finished third in the main championship. Kieffer then competed full-time in the Porsche Carrera Cup France for CLRT Schumacher, scoring his only podium in round three at Circuit de Spa-Francorchamps. Kieffer consistently finished in the top 10 throughout the season, beating Enzo Joulié to the rookie title and ending the overall championship in sixth.

In 2026, Kieffer stayed with Schumacher CLRT to compete in Porsche Carrera Cup Germany and make his Porsche Supercup debut. After a podium at Zandvoort, Kieffer achieved his first PCCD win in the penultimate round at the Nürburgring. In Supercup, Kieffer secured back-to-back second-place finishes at Spa and the Hungaroring, and never finished lower than 10th. He ended the season fourth in the standings, as the rookies' champion.

Personal life Kieffer is coached by 2022 Porsche Supercup champion and fellow Luxembourger Dylan Pereira.

Karting record

Karting career summary SeasonSeriesTeamPosition 2023 IAME Euro Series – X30 Senior RSD Karting 185th IAME Warriors Final – X30 Senior NC 2023 WSK Champions Cup – X30 Senior RSD Karting NC IAME Euro Series – X30 Senior 115th Source:

Racing record

Racing career summary SeasonSeriesTeamRacesWinsPolesF/LapsPodiumsPointsPosition2023Ultimate Cup Series Challenge Monoplace - F4Formula Motorsport33133842nd 2024 Formula 4 UAE Championship X GP30000029th French F4 Championship FFSA Academy2021131164th F4 British ChampionshipXcel Motorsport30000430th FIA Motorsport Games Formula 4 Cup Team Luxembourg2000006th2025 Porsche Sprint Challenge Southern Europe CLRT Schumacher8020178 3rd Porsche Carrera Cup France1200011276thNürburgring Langstrecken-Serie – Cup3AV Racing by Black Falcon100000NC†2026Porsche Carrera Cup GermanySchumacher CLRT14102298*7th*Porsche Supercup80002824th Season still in progress.

Complete Formula 4 UAE Championship results (key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 DC Points 2024 X GPYMC11YMC12YMC13YMC21YMC22YMC23DUB11DUB12DUB13YMC31YMC32YMC33DUB21DUB22DUB23 29th 0

Complete French F4 Championship results (key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 DC Points2024NOG1NOG2NOG3LÉD1LÉD2LÉD3SPA1SPA2SPA3 NÜR1NÜR2NÜR3MAG1MAG2MAG3DIJ1DIJ2DIJ3LEC1LEC2LEC34th116

Complete F4 British Championship results (key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 DC Points 2024 Xcel Motorsport DPN1 DPN2 DPN3 BHI1 BHI2 BHI3 SNE1 SNE2 SNE3 THR1 THR2 THR3 SILGP1 SILGP2 SILGP3 ZAN1 ZAN2 ZAN3 KNO1 KNO2 KNO3 DPGP1 DPGP2 DPGP3 DPGP4 SILN1 SILN2 SILN3 BHGP1 BHGP2 BHGP3 BHGP4 30th 4

Complete Porsche Sprint Challenge Southern Europe results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) YearTeam12345678PosPointsRef2025 CLRT SchumacherALG1ALG2EST1EST2VAL1VAL2CAT1CAT23rd78

Complete Porsche Carrera Cup France results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) YearTeam123456789101112PosPoints2025 CLRT SchumacherBAR1BAR2DIJ1DIJ2SPA1SPA2MIS1MIS2VAL1VAL2LEC1LEC2 6th 127

Complete Porsche Carrera Cup Germany results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Team 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DC Points 2026 Schumacher CLRT IMO1 IMO2 RBR1 RBR2SPA1 SPA2 ZAN1 ZAN2 LAU1 LAU2 NOR1 NOR2 NÜR1 NÜR2 HOC1 HOC2 7th* 98* *Season still in progress.

Complete Porsche Supercup results (key) (Races in bold indicate pole position) (Races in italics indicate fastest lap) Year Team 1 2 3 4 5 6 7 8 Points 2026 Schumacher CLRT MON CAT RBR SPA HUN ZAN1 ZAN2 MNZ 4th 82

* Season still in progress.

References

External links