The 18-year old graduated to BRDC F4 last season with Douglas Motorsport, progressing throughout the year to establish himself as a top-six challenger in the latter half of the season, and claiming a best result of fourth at Silverstone.
The Escuderia Telmex protégé’s big breakthrough came in November’s Winter Championship, where he consistently ran in the top-five, scoring his maiden series podium on the Snetterton 300 circuit.
At the subsequent Brands Hatch Indy circuit meeting, Fonseca claimed his first series victory in tricky conditions. This was followed the next day by a first pole position and subsequent lights-to-flag victory to secure third place in the final standings.
Fonseca commented: “I’m really happy to be working with Lanan Racing in Formula 4 this year. Last year was my first season in single-seaters so it was a learning year, now I have more experience and I’m more prepared. The goal for this season is to be champion in F4 and I think together with Lanan Racing we will be able to do it.
“I really want to thank my family and my sponsors, Escuderia Telmex, the state of Guanajuato and Perugia for believing in me and my project. Without them this wouldn’t be possible.”
Lanan team boss Graham Johnson added: “We’re looking forward to working with Rodrigo in the 2015 BRDC F4 Championship. He made good progress throughout last season, so I’m hoping we can build on that this year. We’ve now got two great drivers signed up for this season, and our aim is to try and win a third-straight title.”
Lanan Racing has also signed British karting star Jack Bartholomew.