IVA Advice

In April 2009, the Single Vehical Approval Scheme that all kit cars had to pass became the Individual Vehical Approval scheme. Whilst almost identical bar the name and the increased fees for the inspection, there are one or two gotchas that Sportster builders must be aware of, as some tests have changed, and the kit as provided by Marlin will need some amendments to pass


Grill Slots

The slots around the main grill aperture will need at leat a 1mm radiused edge if they 25mm wide (or wider). This is easily achieved by using some emery cloth to turn the edges over once you have cut the slots out.

Wheel Coverage

Front - You will need to ensure that the cycle wings are positioned so that they cover the proscribed areas of the tyre, as shown in the IVA testing manual. The wings as provided by Marlin are big enough to allow this. 


Rear - The rear wings will fail IVA as they are, due to the fact that they do not cover enough of the rear tyres when looking from behind (see the diagrams in the IVA manual). You will need to fashion some form of wing extension, as I did. You can not just use a very large mud flap, as it needs to be rigid.

Wing Edging

All of the wing edges will need to be covered up using push on rubber edging. This is because any exposed edges must be ‘turned inwards’, or have a radius of curvature of at least 2.5mm. CBS sell push on edging which I used, and the IVA examiner was satisfied with it.

Trackrod Ends & Upper Wishbones

The exposed threads and locknuts of the trackrod ends and the upper wishbone eyes need to be covered up. Heavy duty shrink tubing is just the job for this, and can also be found at CBS.

Brake Fluid Markings

All brake fluid reseviors require the correct markings now, either on the cap or within 100mm of the resevior itself. Most generic remote resevoirs that you can get from the various kit car parts shops don't have these markings, but you can either bond a cap that has the markings on to the one the resevoir came with (as I did), or the ever reliable CBS now do a sticky label that you can either put on the resevoir or near to it.

Exhaust Tips

If you have the Marlin exhaust system, it will not pass the requirement to have rolled exhaust tips. The easiest way to get round this is to turn the silencers so that the exhaust tips point inboard, under the car. This takes the cut edge of the exhaust tip out of the way of the tester's sphere, and also has the added bonus of directing the noise away from the SPL meter when he does the noise check.


Don't fit your windscreen until after the test. By fitting the windscreen, you will also have to fit all of the wash wipe system (which isn't that much of an issue), but you will also have to fit a functioning demister system. Which, in an open top car that (IMHO) looks much better without a roof, is completely pointless. 

Spare Wheel

Again, don't mount this until after you pass the test. The spare wheel can (in some cases) fail projection checks.

Seatbelt Turning Bar

You need to have an effective top anchorage for the seat belts / harnesses. Marlin do supply a bolt in bar that fits between the rear suspension turrets, but a) it doesn't look that strong and b) it wouldn't be high enough for the IVA examiner. It's easier to get a tube welded in between the roll over uprights as it's stronger and can be postioned in the correct place in relation to your seats. The height it needs to be at will be determined by what seats you have and how you've mounted them, but the height can be calculated using section 31 of the IVA manual (see below)

VIN Plate

I'm not sure if this has been rectified on newer chassis from Marlin, but IVA requires your VIN plate to be on the right hand side of the car, and that the manufacturers name is in block capitals. Older chassis had neither. Easily rectified with a new stampable VIN plate, available on eBay

Front Dampers

This would probably be an issue in the old SVA as well as IVA - but some builders have been pinged on the sharp edges on the height adjuster on the bottom of the damper. You can cover these up by using some universal CV boots slipped wide end first onto the damper, so the bellows portion of the boot cover the adjuster and bottom of the spring.


IVA brought in a new requirement regarding bumpers. They now need ends that turns to the body/chassis or completely back on itself forming a loop, and those ends must be within 30mm of the body work/chassis. Marlin brought out new bumpers to meet this new requirement, which I fitted and they passed - but if you have old style bumpers they can be IVA-proofed by putting an extension cover over them with longer tips that bend back toward the body. These can then 'fall off' after the test.

IVA Links

Complete Kit Car - SVA to IVA article   A very useful article published by Complete Kit Car magazine which does a thorough job pointing out the differences between the old SVA and the new IVA tests
IVA Manual   The Gospel according to St VOSA. Essential reading, it covers everything the testers will be looking for when you put your car in for inspection.