Although celebrities are known to have insane car collections that the average person can only dream of, some just don't seem to get it right despite the millions of dollars sitting in their bank accounts.Related: 10 Times Celebrities Decided To Modify Their Cars... With Disastrous ResultsWhile some of these celebrities outrightly splash cool cash on ludicrous four-wheelers, others make their once-exotic cars hideous in an attempt to add a personal touch. While the word "ugly" is largely subjective, and although there is nothing wrong with celebrities having a rare taste in cars, it would be quite a stretch to call some cars "beautiful" regardless of the amount that is sunk into their purchase and modification.

From the garages of millionaires to superstar singers, we bring you 10 ugly celebrity cars that left us scratching our heads.

10 Austin Mahone - BMW i8

Although celebrities are known to splash money on frivolities from time to time, Austin Mahone took this concept to a whole new level with his BMW i8. At first glance, this supercar looks like it’s been sanded down and left in the rain for far too long. But the rusted look is actually a conscious and labor-intensive custom wrap job done by Metrowrapz.

The Florida-based vehicle-wrapping giant did such a great job of making a rusted effect that some people found it hard at first to believe that it was actually a wrap. But while Metrowrapz brought the wild imagination of Mahone to reality, many would argue that his BMW i8 looks like it belongs in the junkyard.

9 Will.I.Am - Custom Delorean

Who would have imagined someone would be crazy enough to actually bring the DeLorean time travel machine used in the 1989 classics, Back to the Future into reality. But Will.I.Am's love for cars fuelled his determination to not just buy a car, but create one.

The doors of the Delorean are pretty much the only parts that weren't reworked. While West Coast Customs succeeded in rebuilding the Delorean to Will.I.Am’s taste, we honestly feel this is one of those things that should never have been in existence. But for someone with so much money to splash around like Will-I-Am, you can only expect more outrageous creations in the future.

Related: 50 Cent's Jet Car And 9 Other Weird Cars Owned By Celebrities

8 Dennis Rodman - H1 Hummer

Just when you think you've seen all there is to terrible wraps and paint jobs, Dennis Rodman, the world-famous Chicago Bulls forward will show you that you haven't seen anything yet. His 1996 Hummer H1 is cladded with images of nude women, and Rodman himself airbrushed on the vehicle's back.

Besides the tasteless nudity, the basketball drawings and cop vehicle headlights also contribute to making the Hummer H1 cringe-worthy vehicle. So, it wasn't a surprise that the Hummer H1 wasn't an easy sell when Rodman initially put it up for $55,500. Rodman eventually decided to cover the sexually obscene images in gray plastic dip, so the Hummer H1 could attract a buyer.

7 Will.I.Am - Tesla Model S

When you appear on every list of ugly celebrity cars on the internet, you know you must be doing something wrong. Will.I.Am leaves us scratching our heads once again with his customized Tesla Model S.

One of the things we would commend about the modified Tesla Model S is that it now features rear-hinged suicide doors that provide air intake for the brakes. However, the shape of the new grille on the Model S is perhaps the most embarrassing feature. It makes the car appear like it's smiling, which is just stupid, to say the least.

Related: 5 Celebrities Who Drive Awesomely Modified Cars (5 Who Should Never Be Allowed To Modify Anything)

6 Xzibit - Lamborghini Gallardo

For someone that "pimps the ride of others" and owns a collection of jaw-dropping vehicles, one would never have expected Xzibit to cross the line from goldie to gaudy with his Lamborghini Gallardo. Well, in Xzibit’s defense, choosing a color scheme - even for a perfect color combo such as gold and black - can be quite tricky.

Wrapping the originally silver Lamborghini Gallardo with a black film and an Adidas-branded design made it pretty much look like a training shoe. But perhaps, Xzibit later realized how gaudy-looking the Lamborghini Gallardo is, and that was why he put it up for sale.

5 Jake Paul - Ford Focus

Jake Paul, the YouTube star who boasts of a net worth of about $19 Million has a garage stocked with a Tesla, Lamborghini Huracan Performante, and a car we can’t help but notice – the Ford Focus RS. The odd camouflage paint of the Ford Focus will make you wonder what in the world was running through Jake Paul’s mind when he opted for such modification.

While camouflage paint is supposed to blend in, the neon, pink, yellow, and blue of the Ford Focus succeeded in doing the exact opposite. To put it mildly, this Focus is garish. But when the hideous customization is coupled with the fact that the car is a Ford Focus, it’s no surprise why the car is mocked all over social media.

4 Justin Bieber - Audi R8

Don't get it twisted, the Audi R8 is a pretty decent ride for a celeb in that it comes with a 5.2-liter FSI V10 engine that helps it attain a top speed of about 199MPH. It even sports a Bang & Olufsen sound system and generates over 525HP.

But it seems these features were pretty basic for Bieber. So, he opted to wrap his Audi R8 in a leopard print, which did not go down well with car lovers. Knowing Bieber's automotive history, our only advice is: don't expect much from Bieber's taste in cars to save yourself from heartache.

3 Deadmau5 - Nyan Cat Ferrari

When you wrap a classic car in a Nyan Cat theme you get a “Purrari” (as Deadmau5 liked to call it). Deadmau5’s ridiculous-looking car started off as a 2013 Ferrari 458 Spider, but he decided to create a car-like version of the Nyan Cat.

As a popular Canadian musician, Deadmau5 is used to people having varying opinions about his lifestyle. But when he decided to showcase his cat-themed Ferrari at the Gumball 3000, there were tons of comments about the absurdity of the car. While Deadmau5 intentions may have been pure, the Italian supercar maker did not hesitate to slam him with a cease-and-desist order.

Related: These 10 Celebrities Own The Coolest Classic Cars

2 Britney Spears - Hummer H2

When you think of a military vehicle, we are almost certain that pink doesn't come to mind. Well, except you are Britney Spears. Besides the fact that Britney's Hummer H2 is pink, its boxy look and large tires make it appear like a child's toy car.

Perhaps, what's most off-putting about the SUT Barbie Edition of Britney's H2 is that she wasn't satisfied with having only a pinky exterior. She went as far as painting the headliner, seats, door panels, and dashboard pink. But then, the large plasma screen and exquisite sound system comprising 12 speakers are perhaps what saved the Hummer H2 from being a complete disaster.

1 Hulk Hogan - Dodge Viper RT/10

With lots of exotic cars parked in the garage of the retired wrestling superstar Hulk Hogan, we can't help but roll our eyes when it comes to the 1994 Dodge Viper RT/10. Apparently, wrapping the car in his brand colors—red and yellow—wasn't enough. Hulk Hogan went a step further to slap his nickname "Hulkster" across the Viper's hood, as if to say, "look, everyone! This car is owned by me!"

Perhaps, he later realized how disastrous the paint job of the Dodge Viper is, and that's why he auctioned it off and donated the proceeds to charity.