Makes siren noise when accelerating

Wheel bearing . If gets louder as acceleration increases !

Have your wheel bearings checked, when a wheel bearing is going bad it hums louder as you accelerate, when you stop or slow down the sound stops. A bad bearing does that, it over heats due to it not having enough grease on the bearing and will hum as you drive and get louder as you accelerate.

My S40 T5 makes a whirring sound due to the turbo but.... I did have an issue with the right front hub bearing. Lots of road noise while driving and it got louder as I accelerated. $215 dollars for the part.

worn belt, or the cv axels. drive in a tight circle each direction and listen for for a clicking sound. if you hear one then your cv axels need to be replaced

its ya lifters. not getting enough oil to motor. oil pump prob goin out or you spun a crank bearing

Sounds like a bearing is on its way out in the drive belt system, could be the alternator, idlers, a/c if fitted, water pump.

Disconnect drive belt and spin all pulleys, and you will feel if one is loose, tight or making a noise it shouldn't.

Sounds like you have a bad wheel bearing. Could also be a CV. Make sure you know what wheel before you replace anything. Jack it up and spin the wheel by hand. If correct wheel you will hear it. Hope this helps

Noises from axles can be really deceiving. The sound is transfered throuh the transaxle and can resonate through the entire vehicle. The turning to the left thing makes it sound like a problem in the right wheel/axle area. Wheel bearings and axles tend to make worse noise when they are on the OUTSIDE of the turn. More of the vehicle weight is shifted to the outside due to centrifugal force. Thus, if the noise is louder when turning left, this puts the right axle to the outside of the turn and the most likely to be the source of the noise. (and vise-versa) The fact that the noise calms down while cruising makes me believe that it is not a wheel bearing. Wheel bearings can make more noise in turns, however, they usually make a "roaring" or loud "humming" noise that gets louder with speed. An axle is more likely to change or get louder according to engine load more than rotational speed. (Way worse while accelerating or climbing a hill) I would be taking a hard look at the right axle.

Check the Alternator / Powersteering belts .
One of them will be damaged and loose.
Hope this helps.