Throughout history, many automobiles have flown under the radar for various reasons. Some were overshadowed by rivals at launch, while others were ahead of their time and misunderstood. Today, these overlooked gems deserve a second glance, often offering excellent value and unique appeal.
We’ve curated a list of ten such extraordinary cars. From underrated performance machines to sleeper sedans and quirky daily drivers, these vehicles are worth exploring.
Vauxhall VX220 Turbo

The Vauxhall VX220 Turbo is a true driver’s car that often gets overlooked. Built on the Opel Speedster platform, it was sold in the UK from 2004 to 2005 and packed serious performance under its sleek bodywork.
Powered by a 2.0-liter engine borrowed from the Astra GSI, it delivered 200 horsepower—55 more than the standard VX220. With a blistering 0-60 mph time of 4.7 seconds, it outpaced even the Porsche 911 of its era, making it a bargain for enthusiasts.
First-Generation Honda Insight

The first-generation Honda Insight was a trailblazer as the first hybrid car sold in the U.S., beating the Toyota Prius to market in 1999. With its futuristic, low-drag design, it was also one of the most aerodynamic cars ever built, boasting a drag coefficient of just 0.25.
Its hybrid powertrain paired a 1.0-liter inline-three engine with a 13-horsepower electric motor, achieving an impressive 61 MPG combined. The Insight remains an underrated icon of fuel efficiency and innovative engineering.
Fifth-Generation Pontiac GTO

The final iteration of the Pontiac GTO, based on the Holden Monaro, is a hidden gem in the muscle car world. Beneath its understated exterior was a powerful V8 engine—first a 5.7-liter LS1 producing 350 horsepower and later a 6.0-liter LS2 delivering 400 horsepower.
This GTO was a high-performance monster capable of holding its own against more popular competitors. Despite its relative anonymity, it’s one of the best GTOs ever made.
Renault Avantime

The Renault Avantime is one of the most unique cars ever created, blending grand tourer luxury with futuristic styling. Its one-box design and kinematic door hinges made it a standout.
Inside, the Avantime offered a spacious, pillar-less cabin with windows that could fully retract while maintaining structural integrity. Sadly, its production run lasted only two years, with just 8,577 units sold.
Mazda Autozam AZ-1

The Mazda Autozam AZ-1 is a Kei car with attitude. Originally a Suzuki project, Mazda took over and created a lightweight sports car with gullwing doors and a 657 cc turbocharged engine.
With a curb weight of just 1,587 pounds, the AZ-1 was a joy to drive on twisty roads. Its quirky design and lively handling make it a standout in the Kei car segment.
AMC AMX

The AMC AMX is a forgotten hero of the muscle car era. This two-seater offered powerful V8 options, including a 390-cubic-inch engine producing 340 horsepower.
Despite its sleek design and performance, the AMX was often overshadowed by rivals like the Mustang and Camaro. Today, it’s recognized as a unique and underrated piece of American automotive history.
Honda CRX

The Honda CRX was a compact, sporty car built on the Civic platform but trimmed for agility. Its peak came in the second generation (1987-1991), with the 1.6-liter VTEC engine producing 160 horsepower.
Lightweight, fun to drive, and reliable, the CRX remains a beloved choice for enthusiasts seeking an affordable, sporty car.
Porsche 944

The Porsche 944 evolved from the 924 and became a superb sports car in its own right. Its pinnacle was the 944 Turbo, introduced in 1986, which produced 217 horsepower and hit 0-60 mph in under six seconds.
With its sharp handling and distinctive looks, the 944 has become a sought-after classic.
Subaru SVX

The Subaru SVX was Subaru’s bold entry into the luxury sports car market. Its unique design included aircraft-inspired “window-within-a-window” side glass.
Powered by a 3.3-liter H6 engine producing 231 horsepower, the SVX offered impressive performance and reliability, making it a hidden gem for enthusiasts.
Subaru XT

The Subaru XT was a futuristic wedge-shaped car designed for maximum aerodynamic efficiency. Introduced in 1985, it had a drag coefficient of just 0.29.
Powered by horizontally opposed engines, including a 2.7-liter H6, the XT offered a unique combination of style and performance that made it stand out in its era.