Mystery noise - serious or not?

Technical Area Engine, Transmission, Exhaust etc
1
  1. My model of MX-5 is: 2013 Mk 3 Graphite 2.0
  2. I’m based near: Edinburgh
  3. I’m looking for technical help or recommendations on: a worrying noise

Hi Everyone, noob here, I’d be very grateful for any advice you can offer.

My 2007 Mk3 1.8 has sadly gone to live on a farm somewhere, I’m looking at a 2013 Mk3 Graphite 2.0 to replace it. I’m worried though about a noise that comes from the back of that car.

It’s a low growl that I notice when crawling along at low speed in low gear and then accelerating. When I’m accelerating for example in 2nd gear there is often a low growl that at first sounds like a second exhaust note but on closer listening sounds more mechanical. The noise stops as soon as the revs and speed pick up.

I have read the internet, some people have described hearing a whine or a howl but I wouldn’t use those words to describe this noise. Some people suggest that it’s the limited slip differential at work, other use terms like gearbox rollover. I’m afraid I don’t know enough about mechanicals to know whether this is a (slightly irritating) feature of all such models or whether there is something unusual going on.
I’m minded to seek advice from a trusted mechanic but in the meantime if anyy of you recognise what I’m describing I would be very grateful for your advice!

2

When was the diff oil lst changed?

3

No idea, I’m afraid. I guess it would do no harm to change it whilst my tame mechanic is taking a look. Many thanks for your reply!

4

When considering a 2013 Mk3 Graphite 2.0 as a replacement for your 2007 Mk3 1.8, it’s essential to thoroughly inspect the vehicle, including the source of the noise coming from the back. Unusual noises in the rear of a car can have various causes, such as worn suspension components, exhaust issues, or even issues with the rear differential or wheel bearings. Before making a purchase, have a qualified mechanic perform a comprehensive inspection and test drive to identify the exact source and nature of the noise. This will help ensure that you’re making an informed decision and that any potential issues can be addressed before finalizing the purchase.

5

Good advice - thank you.