How much the impact of your car modifications matters when it's time to pass the VTV... it's a lot, I’ll tell you upfront. For a while now, tuning has stopped being just a thing for guys with dark garages. Today, anyone who loves their car thinks about modifying it a bit, but here in Argentina, there's a small problem: the VTV. And it’s not that the VTV is bad, but there are things that used to pass without issues years ago, and now they get rejected without a second thought.

The tuning trend exploded in the 90s when Japanese sports cars arrived. Toyota Supra, Nissan Skyline, Honda Civic, Mitsubishi Lancer... those cars allowed you to modify almost everything without ruining the overall look. Turbo engines, durable blocks, hackable electronics. That shaped an entire aesthetic that still persists today: big spoilers, lowered suspension, wide wheels, loud exhaust pipes. But the reality is that the VTV doesn’t let you do whatever you want. It’s not that they ask you to leave the car stock, but it must meet safety, emissions, and basic functionality standards.

The exhaust is the first thing they reject. If you’re driving with a cut pipe, they’ll make you put the original back on to pass the test. Anything that increases noise or alters emissions is grounds for rejection. So forget about that movie-like sound if you want your inspection sticker.

Lights are another point. All must work: headlights, taillights, parking lights, high beams. If you modified the lenses or the lighting system, everything better be in order. Suspension is where many get into trouble. Shock absorbers, grille, steering box, ball joints, wheels... everything is tested together. A poorly done modification there and everything gets rejected. It’s recommended to do an alignment and balancing before going.

Brakes and tires have objective standards. The brake is tested on a specific bench, measuring actual power. Tires need to have tread and be in good condition. If you arrive with bald tires, it’s an immediate rejection. The bodywork also matters: bumpers, windshield, windshield wipers. Dents don’t always mean rejection, but they are recorded. Inside the car, you need a fire extinguisher, front headrests, functional seat belts, additional warning triangles. If something is missing or broken, it’s a problem.

Now, if you don’t pass, there are two options. If the issues are minor, they give you a provisional VTV and you have 60 days to fix it at no cost. If it’s serious, they reject you outright and you’re not allowed to drive. You also have 60 days, but you can’t drive during that time. The difference is that with the conditional, at least you can circulate while fixing it.

The reality is that modifying your car is fine, but you need to know where the line is. The VTV isn’t your enemy; it just makes you responsible. Before touching anything, think about whether it will pass the inspection. Because there are no shortcuts afterward—you either fix it or you don’t drive. So when planning your modifications, also consider how much it will cost to get it ready for the VTV.