Hehe that undertray is a pain when it comes off, over 80 it's silent, under 40 it just buzzes but any speed between those to and it thumps and bangs like crazy. My old one is sat in the garage - it didn't quite complete its break for freedom :)
 
well my under tray came off on the M62 yesterday
lets say far from happy
and i can say that it does create down force as after i had ripped it all clear
and set off again the steering is a lot lighter

No im cant decide if i should get a new one or try to fit the old one back on
(as only 1 side has snapped off)
 
I would get ASAP, i didn't have one on my old LCR 210, i hit a small flood one day at about 40mph that i was not expecting and water was able to easily come up and it knocked the sensor off my turbo, which was not good, maybe if i had the sump protector it might not of happened, but u can be sure it would have helped avoid this.

PS never heard any whistling, fluttering or performance issues, but getting a new one will put your mind at rest when driving, u never know whats around the next bend and it was there for a reason in the first place i guess.
 
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Chris it would be very obvious if your under tray is missing.
Look under your car, if you can see the underside of your engine and gear box then you don't have an under tray
 
Well you say that but I'm still not so sure. I've been out to the car, (bearing in mind it's dark) looking back from the front bumper I can see a black tray attached to the front bumper. This tray is approx. 1 foot deep, after that I can see what I presume to be the engine or gearbox. Can't tell in this light.
 
Does anyone have a photo of the undertray for a LC FR Petrol. I want to compare it against mine to see if it is missing.

23062007092.jpg


as requested this is for the Cupra but essentially the same thing bar a rebadging lol
 
really? how much better fuel economy? I lost mine at about 80 on the motorway a few months ago! Car behind wasnt impressed!!
 
i doubt its that significant to be fair but i recon if you worked it out over a good few miles you might notice a difference. it causes less air resistance from air getting caught up in the engine bay. by my reconing all our pennies count at the moment so all the little things add up. read a study that showed that driving with your head lights on 24/7 (volvo stylee) cost the average car over £150 per annum the other day!! yes its a different subject all together but it goes to show! finances aside tho if its going to protect your engine from debris its worth having on. last thing you want is a stone or splash of water finding your turbo when its red hot!!
 
afaik they're in 3 parts, and mine only had one on the left. I got one on the right which covered one of the belts, as i could see that it had been scraped on the ground already.

A month later i got the big middle piece fitted, which cost just over £100 iirc. i got this mainly to protect the underside of the engine from salt and other grime from the winter, and also the left tray was ripped out of the bolt just like the OP, i think after hitting a block of ice.

The main reason i'd have the undertray there would be to protect the underside from when it bottoms out, although i guess the economy reason is valid enough
 
I just took my car into my local VAG specialist because my car was experiencing a knocking noise when braking at low speed.

I did pull off some bits of plastic last weekend to try and sort it, but the knocking noise was still there (I knew undertray was damaged about 2 years ago as some nice person had left a massive coil spring in the middle of the road!)

He just put it on the ramp this morning and looks like I need the side (protection for pulleys) and lower plastic tray, he reckons about £22 for each, so will be about £60 all in, not too bad :)
 
Same thing happend to my old Mk4 Golf, my housemates Mk4 Golf and now my Leon......why can VAG not make a car that stays in one peice?!?

Looking at around £120 for a new one fitted from my local garage. Still thats cheaper than a new sump for when the thing hits a speedbump, those sumps (particuarly in the diesels) arn't that thick at all and can get a crack in quite easily. You lose your oil and you lose your engine.

Also here is a diagram with the different types of cover:

825100.png
 
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I can see how the undertray is going to help protect from small stones, water etc.. but if I hit a hoofing big piece of stone or hit concrete how will a piece of plastic stop it damaging my sump? :confused:
 
I guess its more designed so that the car "slides" over the object rather than it slamming into the sump thats hanging down. And if anything is damaged its the cover rather than the slightly more vital sump.

Theres only so much protection a standard car will have, if you wanna go off-roading you buy a metal sump guard.
 
I guess its more designed so that the car "slides" over the object rather than it slamming into the sump thats hanging down. And if anything is damaged its the cover rather than the slightly more vital sump.

Theres only so much protection a standard car will have, if you wanna go off-roading you buy a metal sump guard.

Driving over frozen slush 6'' deep the other day I could hear it scraping the bottom and am worried it might have damaged the sump, but I hope you're right and it simply 'slided' over it.
I never thought the sump was that close to the road.
 
are you talking about the big plastic one in the middle?
it's huge, and very thick. i scrape it lumps of ice and snow that lie in the road all the time. it is really low, but i guess that's good as it protects the metal above..

i wouldn't worry abou tit. it's only plastic, it's design to take the scrapes and bumps :)
 
are you talking about the big plastic one in the middle?
it's huge, and very thick. i scrape it lumps of ice and snow that lie in the road all the time. it is really low, but i guess that's good as it protects the metal above..

i wouldn't worry abou tit. it's only plastic, it's design to take the scrapes and bumps :)


Yeah thanks for that ,I did once hit a sharp stone that went right through and cracked the sump but ice and snow are a tad more compactable .