Ticking noise in a 2011 Corsa SXI at 54000 miles

With only 54k miles, the tick is most likely due to sticky hydraulic valve lifters. I have had this problem on several cars over the years.

Solution: Change the oil and filter with Mobil 1 (full synthetic), but substitute one quart (20%) with Marvel Mystery Oil. If that product is unavailable in your country, use automatic transmission fluid.

You should notice an improvement after only 15 minutes of driving at highway speeds. You can leave the fluid in the crankcase, but be sure to change the oil again after 3k miles.

Might also be a sticky fuel injector. Add Marvel Mystery Oil to the gas tank at a treat rate of 1 oz. per gallon at fill-up. Drive car for one tankful and refill at a rate of 4 oz. per 10 gallons of gas at every fill-up thereafter.

After I listened to your recording, and because you said it is more noticeable inside the car, I believe you need to look for something vibrating against the firewall or underside of the car as the engine runs.

With all the components of new cars jammed into tight spaces, many components are in close proximity to other things and can cause noise if touching. Check for any pipes, levers, cable bundles, brackets, etc. For instance, a loose exhaust hanger/holder can allow an exhaust pipe to touch at certain times as the engine revs.

Also, check your motor mounts to ensure they are not allowing excessive engine movement.

It’s the evap pump that sucks the vapors from the fuel tank they all do it and it goes away after 1500 rpm

I have an identical problem with a 64 plate 1.4 SXi Corsa. According to a Vauxhall inspection it is caused by the 'tank vent valve'.