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Premium Member
19 I-pace HSE Polaris/Fuji white with most options and a lot of accessories
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901 Posts
Discussion Starter #1
I measured mine.
Test conditions:
2019 Jaguar I-pace HSE
Sienna Tan leather seating
Optional roof sun shade installed, cargo area cover in place.
Climate in automatic mode at 72F
Speeds 0-70 mph
Roads mostly asphalt in various states of wear & tear and disrepair
Weather upper 70s F sunny/cloudy/light rain depending on location
Wind light to variable per Eccles. (Who's going to get the reference without a search?)
Tyres are factory installed Goodyear's on 20-inch wheels with mileage > 18K
Sampling rate 1 second

Gain Express sound level meter SLM-25
Accuracy +- 1.5 dB (ref 94dB @ 1kHz)
Frequency range 31.5Hz to 8kHz

Drove the vehicle on various city streets and interstate.
Sound levels at rest general range 45-47 dB (min 44.6 dB recorded)
Sound levels on interstate general range 65-70 dB (max 70.2 dB recorded)

Meter strapped into place:
Sound meter strapped in.jpg


Spreadsheet data attached for your own review. Saved as a CSV and renamed as TXT to load it here.
 

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2019 Jaguar I-Pace
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35 Posts
I measured mine going 60mph California highway and it was 60-61 decibels. Cheers!
 

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2020 I-PACE SE w/ 22" F-PACE Wheels
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120 Posts
Tires and subsequent size will make a big difference. For example, the 18's are going to produce a lot less noise than the 22s.
 

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Super Moderator
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2,346 Posts
How could I have missed this thread? Great data, real sound meter nice! I've checked with an Android app a couple of times, but that's just anecdotal. What is the relative contribution of surface x tire (rolling), versus speed (wind)?
 

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1,032 Posts
There are a lot of variables that cause noise irritation. The frequencies also matter a lot. We're more sensitive at some frequencies than others, both physically and mentally. An average from 31.5Hz to 8kHz isn't all that helpful. A rattle or wind whistle might be drowned out in one car but painfully obvious in a quieter car. NVH is a complex problem. Right now, I have an exhaust fan behind my head. I didn't notice it until I read this. White noise actually helps me sleep, if it's quiet enough but not too quiet.

A graph of the noise along with an explanation or curve to show levels where sounds are more likely to be irritating might be useful.

I did stop in front of an outdoor restaurant, leaving the car and AC on while I stepped to get my takeout. That was the first time I really thought about the fan noise. However, if somebody is foolish enough to eat at a restaurant right now, they can suffer.
 
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