Mercedes tests 'megaphone' exhaust in bid to boost F1 noise
Mercedes fitted a prototype 'megaphone' exhaust to Nico Rosberg's W05 at the Barcelona test, trialling FIA-backed efforts to address complaints about the quieter 2014 V6 engines.
Mercedes has trialled a prototype 'megaphone' exhaust on its W05 Formula One car during the post-race test at Barcelona, responding to mounting pressure from the FIA and race promoters to address the lack of noise from the 2014 V6 turbo engines.
The new 1.6-litre V6 turbo-hybrid power units, introduced for the 2014 season, have drawn criticism from fans, promoters and senior figures in the sport for their subdued engine note compared to the previous generation of naturally aspirated V8s. Some circuit organisers have even threatened to drop their Grands Prix if a solution is not found, prompting the FIA to ask manufacturers for proposals to increase the volume.
How the 'megaphone' exhaust was tested
Mercedes fitted the trumpet-shaped exhaust attachment to Rosberg's car on the second day of the Barcelona test. The device was designed to amplify the engine note by flaring the tailpipe, effectively acting as an acoustic horn. Rosberg completed several laps, including runs at full throttle, while Force India's Dani Juncadella followed behind to compare the sound. Juncadella reported no obvious difference between the modified and standard exhausts, a view echoed by observers trackside.
Mercedes confirmed it would not run the exhaust again during the final day of testing, with the team reverting to its standard programme. Early paddock reports suggested the exhaust made little impact on volume, especially when compared to the louder engines of the GP2 support series running the same weekend.
Why engine noise matters to F1 stakeholders
The muted sound of the 2014 engines has become a commercial and branding concern. Promoters argue that the spectacle of Formula One is diminished without the visceral noise that has long been part of its appeal. FIA president Jean Todt and F1 rights holder Bernie Ecclestone have both acknowledged the issue, with Ecclestone relaying circuit owners' dissatisfaction to teams and manufacturers. The FIA convened meetings with engine suppliers to discuss possible fixes, ranging from internal exhaust modifications to external solutions like the megaphone attachment.
- Fans and promoters cite reduced excitement and atmosphere at events.
- Teams and manufacturers face pressure to balance technical regulations with spectacle.
- The FIA is under scrutiny to preserve F1's appeal without undermining the new hybrid era.
What happens next
No immediate regulatory change is planned. The FIA will evaluate data from the Barcelona test and consider further trials at upcoming sessions, with the next in-season test scheduled after the British Grand Prix. Any solution adopted for all teams is unlikely to appear before mid-season, with the German Grand Prix in July identified as the earliest realistic target. Until then, teams and fans must contend with the quieter V6s while the governing body weighs its options.
The megaphone exhaust remains a visible attempt to address the sound debate, but its limited effect at Barcelona suggests the search for a workable fix will continue.
