10 Overlooked Used Sports Sedans That Pack More Power Than You Expect

When it comes to high-performance sedans, models like the BMW M5 and Mercedes-AMG E63 often steal the spotlight. However, the used car market is filled with overlooked sports sedans that pack far more power than most people expect. Whether due to badge bias, low production numbers, or simply being overshadowed by more popular rivals, these under-the-radar four-doors deliver impressive horsepower without the sky-high price tags of their better-known counterparts.

From turbocharged European sleepers to American V8 muscle sedans, these models offer a thrilling driving experience while remaining practical enough for daily use. Many of them feature manual transmissions, AWD grip, and sport-tuned suspensions, making them excellent choices for enthusiasts looking for performance on a budget. Despite their hidden-gem status, these sedans can go toe-to-toe with some of the best sports cars of their era.

Let's highlight 10 overlooked used sports sedans that surprise with their power. Whether you prefer the quirky turbocharged Saab 9-3 Viggen, the refined Lexus IS F, or the brutish Chrysler 300 SRT8, there’s a sleeper sedan here that delivers far more excitement than you might expect.

Saab 9-3 Viggen

Horsepower: 230 hp

Saab

Saab might not be the first name that comes to mind when thinking of performance sedans, but the 9-3 Viggen remains one of the brand's most exciting creations. Named after the Swedish fighter jet, this turbocharged compact sedan was developed with input from Saab’s aerospace engineers, giving it a unique aerodynamic design and an aggressive stance. Under the hood, a 2.3-liter turbocharged inline-four engine pumps out 230 horsepower and 258 pound feet of torque, which was impressive for its time.

What makes the 9-3 Viggen special is its raw, old-school turbo power delivery. The front-wheel-drive platform and short wheelbase make it a thrilling, torque-steer-heavy ride, but those who master it are rewarded with blistering acceleration and excellent highway stability. A reinforced five-speed manual transmission and sport-tuned suspension ensure a spirited driving experience, even by modern standards.

Today, the 9-3 Viggen remains an overlooked gem in the used sports sedan market. It’s rare, with fewer than 5,000 units produced for the U.S., and its quirky Scandinavian charm makes it a cult classic. While finding a well-maintained example might take some effort, the reward is a thrilling yet practical turbocharged sleeper.

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Buick Regal GS

Horsepower: 270 hp

Buick

When you hear "Buick," high performance isn't the first thing that comes to mind, but the Regal GS is an exception. This mid-size sports sedan was Buick’s answer to the BMW 3 Series, blending luxury with unexpected performance. Beneath its refined exterior, the Regal GS houses a 2.0-liter turbocharged inline-four making 270 horsepower and 295 pound feet of torque, paired with a six-speed manual or automatic transmission.

The Regal GS surprises many with its sharp handling and well-balanced chassis. It features GM’s HiPer Strut front suspension, which reduces torque steer and improves grip, making it feel far sportier than most people expect from a Buick. Its Brembo brakes, aggressive styling, and driver-focused cockpit further reinforce its performance credentials.

Though it lacks the prestige of a European badge, the Regal GS offers an enticing combination of power, refinement, and affordability in the used market. It’s a fantastic option for buyers who want a sleeper sedan that doesn’t compromise on comfort.

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MazdaSpeed6

Horsepower: 274 hp

2006 Mazda Mazdaspeed6 front quarter panel view

Mazda’s performance division may not be as well-known as BMW’s M or Mercedes-AMG, but the MazdaSpeed6 is a true under-the-radar performance sedan. Based on the standard Mazda6, this turbocharged all-wheel-drive (AWD) beast features a 2.3-liter turbocharged four-cylinder producing 274 horsepower and 280 pound feet of torque.

What sets the MazdaSpeed6 apart is its AWD system, which provides outstanding grip and launches the car off the line with authority. Unlike front-wheel-drive performance sedans of its time, the MazdaSpeed6 delivers a balanced, confidence-inspiring driving experience, even in poor weather conditions. Its six-speed manual transmission and aggressive suspension tuning make it a joy to drive.

Despite its capabilities, the MazdaSpeed6 was a sales flop, making it a rare sight on the road today. That scarcity adds to its appeal in the used market, where it remains one of the most exciting and underappreciated Japanese sports sedans ever built.

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Silver 2024 Mazda MX-5 Miata side left action shot

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Acura TL Type-S

Horsepower: 286 hp

Acura

The Acura TL Type-S is the definition of a sleeper sports sedan, blending Honda’s reliability with genuine performance capabilities. Powered by a 3.5-liter V6, it produces 286 horsepower and 256 pound-feet of torque, making it significantly more potent than its standard TL sibling.

A six-speed manual transmission was available for those who wanted a more engaging drive, while the sport-tuned suspension and limited-slip differential helped deliver excellent handling. The TL Type-S also featured upgraded brakes and a throaty exhaust note that added to its performance appeal.

While the Acura TL has always been a respectable luxury sedan, the Type-S version remains underappreciated compared to European rivals. It offers an excellent balance of power, reliability, and affordability, making it one of the smartest used sports sedan buys today.

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Volvo S60 R

Horsepower: 300 hp

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Volvo isn’t typically associated with high-performance sedans, but the S60 R is an exception. Equipped with a turbocharged 2.5-liter five-cylinder engine, it generates 300 horsepower and 295 pound-feet of torque, making it one of the most powerful Volvos of its era.

The Haldex AWD system ensures impressive traction, and the Four-C (Continuously Controlled Chassis Concept) adaptive suspension allows drivers to switch between comfort, sport, and advanced settings. The result is a car that feels composed in daily driving yet capable of delivering serious performance when pushed.

Despite its performance credentials, the S60 R remains underrated, often overshadowed by German rivals. However, those in the know recognize its unique appeal, blending Scandinavian luxury with serious power.

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Jaguar XJR

Horsepower: 400 hp

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The Jaguar XJR is the quintessential British sleeper sedan, offering 400 horsepower from a supercharged 4.2-liter V8. It combines old-school muscle with refined luxury, making it one of the best-kept secrets in the performance sedan world.

Despite its powerful engine, the XJR remains subtle and understated, with sleek styling and a plush interior that prioritizes comfort. However, press the throttle, and it surges forward with effortless speed, thanks to its six-speed automatic transmission and lightweight aluminum chassis.

Although German rivals like the BMW M5 often steal the spotlight, the XJR delivers comparable performance at a fraction of the price in the used market. If you're looking for a high-horsepower luxury sedan that doesn’t scream for attention, the XJR is an excellent choice.

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2015 Audi Q5

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Pontiac G8 GXP

Horsepower: 415 hp

Pontiac

The Pontiac G8 GXP was GM’s last great performance sedan before the brand’s demise, and it remains a hidden gem. Powered by a 6.2-liter LS3 V8, it churns out 415 horsepower and 415 pound-feet of torque, making it one of the most potent American sedans of its time.

Unlike many muscle cars, the G8 GXP offers refined handling, thanks to its rear-wheel-drive (RWD) platform and sport-tuned suspension. A six-speed manual transmission option further enhances its enthusiast appeal.

Although Pontiac is long gone, the G8 GXP continues to gain recognition among performance sedan enthusiasts. Its combination of brute force and balanced dynamics makes it one of the best used sports sedans money can buy.

Specifications

Lexus IS F

Horsepower: 416 hp

Lexus

Lexus isn’t known for high-performance sedans, but the IS F changed that perception. Its 5.0-liter V8 produces 416 horsepower and 371 pound-feet of torque, paired with an eight-speed automatic transmission that delivers rapid shifts.

Despite its luxury branding, the IS F is seriously quick, with a 0-60 mph time of around 4.5 seconds. Its stiff chassis, sport-tuned suspension, and Brembo brakes ensure sharp handling, making it a true competitor to the BMW M3.

While many overlook the IS F in favor of its German rivals, it offers Toyota’s legendary reliability with serious V8 power, making it a compelling used sports sedan.

Specifications

Cadillac CTS V-Sport

Horsepower: 420 hp

Cadillac

Slotting between the regular Cadillac CTS and the full-blown CTS-V, the CTS V-Sport delivers 420 horsepower from a twin-turbocharged 3.6-liter V6. It provides a perfect balance of power and luxury, offering impressive acceleration without the extreme nature of its supercharged V8 sibling.

The magnetic ride control suspension gives it exceptional handling, while its well-appointed interior ensures long-distance comfort. Despite being overshadowed by the CTS-V, the V-Sport remains a fantastic sleeper sedan.

Specifications

Toyota GR86 parked in racetrack

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Chrysler 300 SRT8

Horsepower: 425 hp

Chrysler

The Chrysler 300 SRT8 is the definition of an American muscle sedan, packing 425 hp from a 6.1-liter HEMI V8. Its bold design, rear-wheel-drive platform, and throaty exhaust make it one of the most exciting sedans to drive.

Despite its high power, the 300 SRT8 offers a comfortable and luxurious cabin, making it a practical daily driver. For those who want V8 muscle in a full-size sedan, the 300 SRT8 is a fantastic choice.

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