Muscle vehicles have a unique, adventurous, and entertaining history. However, not all muscle vehicles are made equal, and some automobiles will inevitably slip through the gaps. There have been many fantastic muscle vehicles over the years that may be regarded as pieces of art and huge mechanical engineering accomplishments. A lot of famous automobiles in television history were muscle cars, and engineers were constantly competing to build the most powerful muscle car ever built.

When the motors were large and fuel was affordable, the late 1960s and early 1970s were prime time. But, alas, all wonderful things must come to an end. They enacted new government laws governing vehicle safety and emissions in the early 1970s. The 'Malaise era' arrived in 1973 when recurrent oil crises forced the government to tighten its economy and pollution restrictions, and it lasted till 1983. These machines' performance deteriorated significantly. Automakers did their utmost to make these vehicles appear strong, but they couldn't endure over 10 seconds on the course.

Sometimes, an automobile as a whole is terrible, other times it was the case of simply a certain generation of an iconic car being terrible. Are you prepared to see some of the most heinous muscle vehicles ever created?

10 1978 Ford Mustang King Cobra

Black 1978 Ford Mustang King Cobra
via BringaTrailer

The Ford Mustang's King Cobra has to be one of the worst cars ever made. It was essentially a Pinto with a Ford emblem on the hood. Even while the snake decal and new color made it seem nice, it was not very good or unique.

mustang II king cobra
via hagerty.com

The 5.0-Liter V8 in the Pinto-based King Cobra produced only 139 horsepower, no more than the regular vehicle. Fortunately, only roughly 4000 automobiles were produced for this type.

Related: Ken Block's Daughter Races Modified Mustang Against 6-Second R35 Nissan GT-R​​​​

9 1980-85 Chevrolet Citation X-11

en.wikipedia.org

One of the greatest problems with the Citation was that it had many recalls and was widely regarded as hazardous. The Citation was intended to be a small front-wheel-drive muscle car with only a four-speed overdrive or three-speed automatic transmission options.

1980 Chevrolet Citation: Car of the Year
Via: Car.Info

The company updated the vehicle with new stabilizer bars and a steering rack. Sadly, these factors were not nearly enough to prevent it from being a catastrophe. The Citation is one of the cars that GM hopes the world forgets about.

Related: Here's Why The Chevy Citation Has A Bad Reputation

8 1975-80 Chevy Monza

Chevy Monza 1977 White girl driving
via Hagerty

Which platform is suitable for a new high-performance car? Chevy thought in 1975 that the Vega platform would be a good place to start. They sold it from the mid-1970s through the early 1980s, although it was never mass-marketed or well-received.

The Chevy Monza.
Via: Wikimedia

Although they marketed it as a performance vehicle, it was clearly one of Chevy's slowest models. The automaker discontinued the V8 engine option a few years after it was introduced. Shortly after that, it was discontinued.

7 1977-1979 Mercury Cougar XR7

via curbsideclassic.com

The Mercury Cougar was essentially a posh Mustang with a nice interior. Because it came equipped with a V8, the first-generation Cougars have become a low-cost muscle car option. They marketed the Mercury Cougar as an economical high-end muscle car with a boxy exterior.

1979 Mercury Cougar XR7 Coupe
via Orlando Classic Car

They gave it a substantial weight gain, which only served to slow it down. The Cougar's status as a muscle car was ruined by this recent development. The fourth generation of the Mercury Cougar XR7 was admittedly the worst.

6 1983 Dodge Charger

1982 Dodge Charger Was Changed For The Worse
Via Flickr

The Dodge Charger didn't have a good 1980s. Dodge capitalized on the popularity of hatchback automobiles at the time by offering the Charger in a hatchback type, which was unsuitable for its target market. Worse, they provided a hatchback model with a performance-deficient 4-cylinder engine.

1982-1987 Dodge Charger: When The Charger Was An Omni Trim
via Flickr

Even Carroll Shelby attempted to enhance this Charger by equipping it with a 175-horsepower turbo engine, but still not enough to make the L-body Charger worthy of its moniker. Nothing will save a car if the Shelby label can't save it.

5 Late '70s AMC Hornet AMX

1977 Yellow AMC Hornet
Via: Wikimedia Commons

The AMC Hornet was a budget-friendly muscle car built for customers who wanted a powerful car. It was plain and had too many parallels to other products on the market.

Yellow 1977 AMC Hornet AMX Parked Outside
Via Mecum Auctions

While this car came with a V8 engine as an option in contrast to the AMX package, the 5.0-liter engine only produced 120 horsepower. That was a low output for a performance automobile even in the late 1970s.

Related: Here's What The 1970 AMC Hornet Costs Today

4 2004-2005 Chevrolet Impala SS

2004-2005 Chevrolet Impala SS
Mecum Auctions

They released the Impala SS in 1994, and it was the sexiest muscle car to come out of Chevrolet in years. Chevy opted to substitute the Impala with a front-wheel-drive structure when the full-size GM platform was discontinued in 1996.

2004 Chevrolet Impala SS: Not Up To The Name
RM Sotheby's

The lack of imagination and innovation made the 2004-2005 Impala model one of the weakest in the company's history. It had the same look as the Lumina and the same engine as the previous generation.

Related: 10 Classic Impalas That Are More Expensive Than A New Corvette C8

3 1980 Dodge Aspen R/T

V8-Powered 1976 Dodge Aspen R/T
Via: Flickr

At the end of the 1970s, among the worst muscle vehicles arrived. The Dodge Aspen R/T performance coupe came with a lot of clues that it was a sporting powerhouse, including a blacked-out grille, body striping, and graphics and badging to let everyone know they were really spectacular.

1980 Dodge Aspen R/T
Via hotrod.com

But It was nothing but subject to back-to-back recalls, and the body had a serious corrosion problem. Dodge tried to fix their faults, but it was too late; the harm had already been done to the firm, and the car flopped.

2 1978 Oldsmobile 442

Courtesy Classic Car Auctions

The Oldsmobile 442 was a famous muscle-car design that began as a performance variant of a regular Cutlass. The four-barrel carburetor, four-speed manual transmission, and two exhausts are referred to as 4-4-2. Lack of options for purchasers was what made the 1978 edition so terrible.

1978 Oldsmobile 442 Aeroback
Via: ClassicCars

Only a 5.0-liter engine and an "aeroback" body design were available. Furthermore, the car could only generate 145 horsepower! On a regular drive, this oversized shipping container won't move faster than 109 mph.

Related: 5 Cars That Made Oldsmobile Great (5 That Destroyed It)

1 1982 Chevrolet Camaro Iron Duke

1983 Chevrolet Camaro "Iron Duke"
Via Wikimedia Commons

The 2.5L, four-cylinder "Iron Duke" was the smallest and least effective engine available for the new Camaro, and they mated it to a three-speed automated transmission. However, this wasn't enough to make it among the worst muscle cars ever made. No, that would be its four-cylinder motor, which only produced roughly 90 horsepower.

1982-Chevrolet-Camaro-Iron-Duke
via historygarage

With all that tremendous power under the hood, this Camaro could go from zero to sixty in under 20 seconds, meaning this muscle car might be embarrassed by a Small Hatchback. While the powertrain in the Iron Duke failed, it became a standard in Chevy station wagons.