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Established 1989.
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Ultimate Outdoor Car Cover in Outdoor car covers

£199.00 - £299.00
  | Customisation Available

Ultimate Outdoor Car Cover

£199.00 - £299.00
* Year of car?:

* FREE CABLE LOCK WITH EVERY OUTDOOR COVER (automatically included with your cover)

Our Ultimate Car Covers are made from a specially formulated advanced Nanotechnology fabric, giving a unique water resistant coating to ensure long term protection and care for your car.

These are the world’s first 'standard fit' car cover available in this fabric with its unique nanotechnology properties.

This cover is manufactured from our most advanced fabric; fully waterproof*, fully breathable, strong and stretchy. The fabric is a little like a wetsuit, making them extremely soft on the inside and extremely durable.  The covers have three sets of fully detachable straps that go underneath the car. 

These covers offer all of the benefits of the Custom Made Ultimate Car Covers but at a more affordable price.  The covers are available in 15 sizes designed to fit a wide range of cars.  Manufactured in a discrete grey colour these car covers are suitable for use both indoors and outdoors.

The Ultimate Outdoor covers have three sets of fully detachable straps underneath to help secure the cover, one at each end and one in the middle. 


WINTER TEST BLOG - click to read our ongoing winter test on our BMW E30.

WINTER TEST BLOG PART 2 - click to read our updated winter test on the BMW E30.


CONDENSATION - please see here for information regarding condensation and outdoor car covers.


If you want to use your cover for transportation, we would recommend using a trailer net to help secure the cover down.  You can see these here.




*whilst the fabric is waterproof occasionally some seepage may occur through the seams, this will evaporate naturally as the fabric is breathable


These Ultimate covers are part of our standard fit range and not a fully fitted cover.

If you have any questions as to whether this cover is suitable for use on your car, please see the specifications tab or do not hesitate to give us a call - 01938 561717.


Need a cover custom made for your car?

Then click here to see our custom outdoor car covers


  • Your car is situated anywhere that is NOT a hardstanding/concrete/tarmac
  • Your car has been resprayed in the last few years, even if it has been oven baked
  • Your car is made of fibreglass
  • Your car is made of carbon fibre
  • Your car has a cellulose or 2-pack paint finish


  • The first 'standard fit' cover available in the UK in this fabric with its unique properties.
  • Strong stretchy fabric ensures a snug fit showing the contours of your car.
  • Fully breathable, soft fabric preserves your paint work and allows the cover to be fitted to a wet or dry car.
  • Fully waterproof to provide the ultimate protection for your car from the elements.
  • Range designed to fit majority of cars on the road today.
  • 3 strong straps provide extra security.
  • Ideal for longer term outdoor storage.
  • Protects against bird droppings Protects against bird droppings
  • Breathable Breathable
  • Suitable for use with cable lock Suitable for use with cable lock
  • Protects from tree sap Protects from tree sap
  • Snow and frost protection Snow and frost protection
  • Storage bag included Storage bag included
  • Strong Straps and Elastic Strong Straps and Elastic
  • Protection from UV rays Protection from UV rays
  • Protects from fine dust and dampness Protects from fine dust and dampness
  • Protects from scrapes and scratches Protects from scrapes and scratches
  • Super Soft Super Soft



Ultimate Car Cover for Mercedes-Benz C63 AMG

Hi Andrew, just wanted to let you know I’m over the moon with the cover for my C63, it not only fits beautiful but also looks superb.  

Many thanks,

(emailed 11/06/2018)


Ultimate Car Cover for Triumph Dolomite Sprint

Thanks for the ultimate cover. As discussed over the phone the medium size would be far too big for the Triumph Dolomite Sprint. The small supplied after our discussion is perfect and we are very happy with it.

Thanks and regards,



Ultimate Car Cover for Porsche 993 Carrera

Hi Adrian 

Thanks to you and Andrew for sorting a cover out for me today. I fitted it when I got back and have to say I'm extremely pleased with both the quality and fit, fabulous bit of kit.



Ultimate Car Cover

Hi Maggy

Received my car cover the next day.  It's very good, the fit is just right.  The water sits on top as droplets not penetrating the surface.  It is much better than my previous cover which I probably should have changed sooner.  



(emailed 23/09/2017)

Ultimate Car Cover for Lexus 430 GS

I just wanted to say a big, big thank you to Maggy for her excellenrt help and kindness in helping me choose the Ultimate Outdoor cover for my Lexus 430 GS, as Maggy knows I am quite disabled but your car cover arrived this morning and it looks as beautiful covered up as it is uncovered, and a big thanks to you all for making my life a little bit easier, and words cannot describe what a wonderful cover you make.  Have a nie weekend all, my very best regards. 

(emailed 24/08/2017)

Ultimate Car Cover for 1987 Pontiac

Hi Adrian,

Sorry for the delay but been a little busy.  Just as you said to me “The LL should be a really good fit  . . . “ because the LL is perfect. In fact it is better than a few ‘tailored’ items I have purchased at much greater cost.

Instead of the area next to my house, I wanted to get my Pontiac out in the front drive for a better picture but as time didn’t allow that this weekend, so I have taken a few picture without/with the cover so you can let other 1987 Pontiac users know what to expect.

Once again thank you for all your help and I can assure you that I am WELL PLEASED with the result.


(emailed 03/05/2017)

Ultimate Car Cover for Mercedes-Benz SL R230

Recently unwrapped my beloved SL after 3 months under a Ultimate outdoor cover.It has survived all tests,especially the critical ones around key parts of the car known for problems after water invasion,yes you have the condensation challenge with any outdoor situation but it has everything thrown at it and is still  relatively bone dry.

Benefits from occasional blowing off the excess that sits after heavy rain depending on the angle the car is parked, I found a leaf blower from a distance did the trick. 


Paul Kirby
(emailed on 01/02/2016)

Ultimate Car Cover for Ferrari 458 - Review by Ziad
Hello Adrian,

Just wanted to drop you this note to express my 110% satisfaction with the Ultimate car cover i got from Classic Additions. Resulting in many many recommendations to my petrol head friends, which i beleive will cultivate two more orders soon, one 997.2 GT3 and one 991.1 Turbo..

Thank you for making the best car covers in the world.
Keep it up.

(Posted on 03/05/2016)

Ultimate semi-fit car cover size s1 - Review by TK
I have just taken delivery of my new Mazda MX5 new shape therefore information was not ready available, spoke to Classic additions who recommended this cover for the usage I needed and I must say what a quality product. The service and advice from the company was second to none. I will definitely be recommending them from now on. Thank you TK
(Posted on 04/02/2016)

MGB Ultimate Outdoor Cover - Review by Richard Johnson
I recently purchased one of your Ultimate Outdoor Car Covers for my 1972 MGB Roadster. The car itself isn't quite in concours condition but it is certainly immaculate and very well looked after.
I have today, just removed the cover for the first time in a few months, and despite all the wind and rain we have had in the UK, my car is still shiny and immaculate. I am so confident that your product will look after my MGB, not known for being waterproof, I just wanted to write a quick letter to thank you. I simply wouldn't hesitate in recommending you.
(Posted on 21/12/2015)

Pistonheads Ultimate Review - Review by S Donnelly
I can recommend an ULTIMATE SEMI-FIT car Cover for indoor or Outdoor .. size S
It fits my Cayman S perfectly as it stretches ... so would also fit a GTS / GT4 . I have tried many different makes and fabric types over the years and this one is the best by far .... Thick darkish grey stretch fabric which is breathable and fully waterproof . Pretty good price too ... 

a very satisfied customer.
(Posted on 21/12/2015)

Ultimate outdoor car cover for Vauxhall Monaro - Review by Richard
Good Evening

I Just wanted to drop you a note to say how impressed I am with my cover for my Monaro, its an excellent fit and repels water really well. It has replaced a Storm force Cover that I thought was pretty good but I have to say it is in a different league, I'm glad I found you, I will look to replace my MG Cover too in due course. Many Thanks again excellent service too by the way 
Best Regards 

Richard Stirland
(Posted on 02/11/2015)

Ultimate BMW E30 - Review by Pat
Thanks for the great service!
(Posted on 04/08/2015)

Great cover - Review by Jason D
Excellent cover and I appreciate the great customer service, I am in several owners clubs and will recommend your company to my colleagues.
(Posted on 04/08/2015)

great cover` - Review by Grahame
Having previously ordered a fitted, indoor cover for my Lotus Europa I looked no further than Classic Additions when I needed an outdoor cover as well. I've just moved house and recently fitted the Ultimate cover you supplied. It confirms my initial thought that Classic Additions would come up trumps - many thanks for an excellent, good value cover!
Best regards,
(Posted on 04/08/2015)

Ultimate Peugeot 308 GTI - Review by Giannis Koumoundouros
Thank you for all the help Adrian.
You were very kind and your service awesome.
(Posted on 04/08/2015)

Ultimate XL2 for 1970 Mercury Colony Park Station wagon - Review by Gary
Just to let you know, the cover you supplied for my American station wagon is superb! Not only is this latest fabric worth the wait, but it's a relative bargain. If anyone is looking for an outdoor cover this IS IT! look no further. I can't recommend it enough, thanks again for the great service and product!........a very happy chappy.

Cheers Gary
(Posted on 19/03/2014)

large collection of cars to Nigeria under Ultimate covers - Review by Julian
Hi Dean,
These ultimate car covers are wonderful. I strongly recommend them. 
Please when will the suv sizes be ready for you to send to jeff. Thank you. Julian Osula. Nigeria
(Posted on 06/03/2014)

Car Cover for Outdoor use - Review by GS

My Lotus cover arrived today - Looks great, fits like a glove and excellent quality. Many thanks.

Best regards,

(Posted on 07/02/2014)

Great Service - Review by Ricky B
Just a quick note to Mandy to say thank you for such a pleasant sale of my Audi TT Roadster cover. It was such a pleasure speaking with a very knowledgeable individual regarding your products.

Kind regards
(Posted on 06/02/2014)

Ultimate Outdoor car cover - for Mercedes 190D 1993 - Review by Chris from Cheltenham
Bought cover in September 2013 as car relegated from garage to drive (to make way for a 1971 280 SE) for at least 2 years (so suggested I get this one over the heavy duty one). I can honestly say that this cover has had a right hammering from the British weather since September 2013 to now (Jan 2014) and it has withstood all of it. The 3 heavy duty straps keep the cover in place and, take it from me - this cover is completely waterproof. I remove the cover regularly each month to turn engine over etc and car looks great each time. Highly recommended.
(Posted on 28/01/2014)

BMW Convertible Outdoor Cover - Review by Dr Phil Asante
I bought the cover 2 weeks ago and am absolutely delighted with it. It is a high quality, fully waterproof cover which was so easy to fit and has 3 straps to secure it to the car.
It came in a storage bag.
Now I know my old convertible will be well protected whilst I wait for the UK sunshine.
Many thanks,

Dr Phil Asante
(Posted on 22/09/2013)