Rattling noise + Warning Lights

[owainl]

Hey guys, I recently bought my CUPRA Leon 1.4 ehybrid, its on 17k miles and a 2024, it was an ex cupra head office lease car, so my concerns about how it was treated before is quite low, recently its making a rattling noise on cold starts with the engine manually started through the screen or the brake+throttle trick, I've also got some warning lights that intermittently come on and off, slowing down the gearbox makes like a "wheeeee" noise on regen, when its changing down gears, and sometimes it feels like theres a big delay on accelerating fast, off junctions roundabouts etc, has anyone got any thoughts or is most of this normal and im just overreacting LOL, not to worry its booked in with my local CUPRA garage under warranty anyway, just seeing if anyone has any tips or any hints )

 

[Syphon]

@James_R any ideas?

 

[Loadmaster748]

I share your concerns about pre-registered 'management' cars. My Leon was one of those for 3,500 miles, from February up until to July last year when I bought it, but doesn't seem to have suffered any ill effects from that period of its life!

An 'enthusiastic' period of running in (if that's really a thing these days) shouldn't do any harm.

Yours is under warranty, let the dealer sort it out.

 

[Richiepoos]

I have a 23 1.4 hybrid and it is quite noisy if you ask the engine to charge the battery - sometimes you can feel the car wobble as if it's trying to pull away by itself even when not in gear. I have a 'whoop' kind of noise sometimes when accelerating or decelerating, apparently this is the 3rd clutch between the electric motor and it makes that noise when it engages/disengages. The delay could be the car being in EV mode and then you floor it so the engine has to start and then run in tandem with the electric motor - does it do this in Cupra mode too? The hybrid is a bit of a gimmick in my eyes - doesn't have a big enough battery to travel any distance on it's own and isn't really fuel efficient. BUT Cupra mode is a laugh and it's plenty fast enough. Hope I've helped. Going to miss it when it goes back and is replaced with a V2 Born - you reckon I'll notice the missing 14HP?

 

[James_R]

The drive motor makes high pitched noises that are unavoidable, they can be loud but they don't indicate a problem, the system is monitored enough to let you know when there's something worth worrying about.
If you run the HV battery low and use the engine to help sustain the charge level or increase it then the noise will be louder and constant during charging.

The hybrid system was designed with the thought in mind that a person's average commute would be circa 30 miles per day, that in itself was an achievement on earlier models. They are improving slowly but surely.