Koenigsegg One:1 trips Spa’s noise meters, curtails lap record attempt

The One:1 sets another lap record - but Koenigsegg is denied exploring its full potential

It’s not been a great few months for Koenigsegg’s lap record-setting attempts. First, the Swedish firm is denied the opportunity to run at the Nurburgring flat out, thanks to speed restrictions – and now, it’s fallen foul of Spa’s noise meters.

Koenigsegg recently spent two days at Circuit de Spa-Francorchamps with its One:1 ‘megacar’, hoping to beat its own 2:33.26 lap record for a road-legal production car.

In theory, they managed that feat, setting a 2:32.14 lap around the daunting circuit on a practice run. Koenigsegg’s disappointment, as the company’s blog notes, is that they failed to go even quicker.

The idea was to use the first day of testing as a setup day, honing the car’s specification for a record-setting run on the second day. The trouble was noise: While day one at the circuit allowed for a 110dB output, day two’s limit was dropped to 103dB.

Koenigsegg describes this situation as ‘tricky’ – as you might expect from a 5065cc, twin-turbocharged V8 with a 1341bhp output. Despite hasty and ‘unsightly’ modifications to the car’s exhaust system – giving the One:1 a distinctly diesely downward-pointing pair of pipes – the car still tripped Spa’s noise alarm on its full-throttle lap, cutting the session short.

For the supercar firm, the frustration is obvious – had the team continued to set laps on day one, there’s every chance the car could have gone quicker. They were running on older tyres, and several other cars were on the circuit at the time. With a fresh set of rubber and an empty track, there’d be plenty more potential.

As Koenigsegg notes on its blog, it’s not unusual for a high-end supercar to succumb to noise limits at circuits.

While vehicles habitually pass road-going noise regulations – the European drive-by limit of 82dB is recorded at 30mph and three-quarters throttle – many high performance vehicles have exhaust flaps that open under larger throttle outputs.

Circuits near residential areas often have limits in place on open-track events to prevent issues with the local population, and while higher than road limits, these can still be restrictive for particularly noisy sports cars.

Koenigsegg has hinted that it aims to return to Spa to meet its ‘full potential’. In the meantime, you can watch a video of the 2:32 lap below.

Recommended

Koenigsegg doors - Art of Speed
Koenigsegg doors
Koenigsegg

Koenigsegg doors - Art of Speed

The conventional supercar scissor door wasn't quite enough for Christian von Koenigsegg, so to the drawing board he went
28 Oct 2020
Sub-T.50 Gordon Murray Automotive Project Two supercar confirmed
GMA T.50 XP2
Supercars

Sub-T.50 Gordon Murray Automotive Project Two supercar confirmed

Two-seater retains Cosworth V12 and manual gearbox, but loses ground-effect fan
10 May 2021
Porsche 911 Turbo S Cabriolet 2021 review – a drop-top supercar alternative?
Porsche 911 Turbo S Cabriolet – header
Porsche 911 Turbo

Porsche 911 Turbo S Cabriolet 2021 review – a drop-top supercar alternative?

The Porsche 911 Turbo S Cabriolet is hugely capable, but remains a compromise over the hardtop
9 May 2021

Most Popular

Sub-T.50 Gordon Murray Automotive Project Two supercar confirmed
GMA T.50 XP2
Supercars

Sub-T.50 Gordon Murray Automotive Project Two supercar confirmed

Two-seater retains Cosworth V12 and manual gearbox, but loses ground-effect fan
10 May 2021
Alfa Romeo Giulia GTAm 2021 review – if Porsche built a four-door 911 GT3 RS
Alfa Giulia GTAm header
Alfa Romeo Giulia

Alfa Romeo Giulia GTAm 2021 review – if Porsche built a four-door 911 GT3 RS

Alfa Romeo Giulia GTAm is the most extreme modern Alfa to date. It’s also one of its very best.
12 May 2021
Audi RS6 v Porsche Panamera Sport Turismo v Mercedes-AMG E63 S Estate – super-estates go head-to-head
Audi RS6 v Porsche Panamera v Mercedes-AMG
Features

Audi RS6 v Porsche Panamera Sport Turismo v Mercedes-AMG E63 S Estate – super-estates go head-to-head

Which 600bhp wagon is the current super-estate king? It‘s time to find out as the Audi RS6 Avant takes on Porsche Panamera Turbo S E-Hybrid Sport Turi…
8 May 2021