5 High Performance Cheapest 400 HP Cars Under $10,000

400 hp cars under 10k

Finding a car that delivers high performance without breaking the bank is a dream for many car enthusiasts. While it might seem impossible to find a car with 400 horsepower for under $10,000, there are some gems out there if you know where to look. 

This guide will help you explore some options and provide insights into the considerations and potential pitfalls of buying a high-performance car on a budget.

We scoured platforms like Craigslist, eBay Motors, and AutoTrader to identify potential candidates within the price and horsepower range. Additionally, we consulted reviews and buyer’s guides from sources such as Edmunds, MotorTrend, and Car and Driver to ensure the reliability and performance of these vehicles.

Why 400 Horsepower?

A car with 400 horsepower provides an exhilarating driving experience. This level of power can transform everyday driving into a thrilling adventure, offering rapid acceleration, high top speeds, and the ability to handle demanding driving conditions with ease. 

Cars with this much power are often associated with sports and luxury vehicles, which are typically out of reach for the average buyer. However, there are ways to get your hands on such power without spending a fortune.

Considerations Before Buying

Before diving into the specific models, it’s important to understand a few key considerations:

  1. Maintenance Costs: High-performance cars often come with higher maintenance costs. Ensure you’re prepared for potential expenses related to upkeep and repairs.
  2. Fuel Economy: Cars with 400 horsepower are not typically known for their fuel efficiency. Be ready for higher fuel costs.
  3. Insurance: Insurance premiums for high-performance cars can be significantly higher than average. Shop around to find the best rates.
  4. History and Condition: Given the low price point, many of these cars may have high mileage or a history of hard use. Thoroughly inspect any prospective purchase or have a trusted mechanic do so.

5 Top Picks

While challenging, finding a car with 400 horsepower for under $10,000 is possible. Here are some models that often meet these criteria:

1. Chevrolet Corvette C5 (1997-2004)

The Chevrolet Corvette C5 is a great example of an affordable high-performance car. With its LS1 V8 engine, it produces around 350 horsepower stock, but with some modifications, it can easily reach 400 horsepower.

  • Price Range: $8,000 – $10,000
  • Performance: The LS1 engine is highly tunable. With bolt-on modifications like intake, exhaust, and a tune, you can achieve significant power gains.
  • Considerations: Look for a well-maintained example. Common issues include worn suspension components and potential electrical problems.

2. Ford Mustang GT (2005-2010)

The Ford Mustang GT, particularly from the fifth generation, offers excellent performance and a strong aftermarket support. The 4.6-liter V8 can be pushed to 400 horsepower with some modifications.

  • Price Range: $7,000 – $10,000
  • Performance: Adding a supercharger or turbocharger kit can easily bring the horsepower up to and beyond 400.
  • Considerations: These cars are popular among enthusiasts, so finding one in good condition may require some patience. Check for signs of abuse or poor modifications.

3. Pontiac GTO (2004-2006)

The Pontiac GTO, also known as the Holden Monaro in Australia, comes with a powerful LS1 or LS2 engine, making it a strong candidate for a budget high-performance car.

  • Price Range: $9,000 – $10,000
  • Performance: The LS2 engine (in 2005-2006 models) produces 400 horsepower stock. The LS1 (in 2004 models) can be modified to reach similar power levels.
  • Considerations: These cars are relatively rare, so finding one in good condition at this price point can be challenging. Ensure the car has a good maintenance history.

4. BMW 7 Series E65 (2002-2008)

The BMW 7 Series E65, specifically the 745i and 750i models, offer luxurious performance with their powerful V8 engines.

  • Price Range: $7,000 – $10,000
  • Performance: The 750i’s 4.8-liter V8 engine produces 360 horsepower, and with some tuning and modifications, reaching 400 horsepower is achievable.
  • Considerations: Maintenance and repair costs for luxury German cars can be high. Look for models with comprehensive service records.

5. Cadillac CTS-V (2004-2007)

The first-generation Cadillac CTS-V offers excellent performance with its LS6 engine borrowed from the Corvette.

  • Price Range: $9,000 – $10,000
  • Performance: The LS6 engine produces 400 horsepower stock, making it one of the best deals for a high-performance car in this price range.
  • Considerations: The CTS-V is known for its strong performance but also for potential rear differential issues. Ensure any car you consider has been well maintained.

Modifications to Achieve 400 Horsepower

If you find a car that’s close to 400 horsepower but not quite there, modifications can help you reach your goal. Here are some common modifications that can boost horsepower:

  1. Intake and Exhaust Upgrades: Improving airflow into and out of the engine can yield significant power gains. High-flow air filters, cold air intakes, and performance exhaust systems are popular upgrades.
  2. Tuning: A performance tune can optimize your car’s engine management system to increase power output. This is often done with aftermarket ECU tuning or remapping.
  3. Forced Induction: Adding a supercharger or turbocharger is one of the most effective ways to boost horsepower. These systems force more air into the engine, increasing combustion and power.
  4. Engine Internals: Upgrading internal engine components like camshafts, pistons, and connecting rods can help handle increased power levels and improve performance.

Potential Risks and Rewards


  • High Maintenance Costs: As mentioned, these cars often require more expensive maintenance. Parts can be pricier, and labor can take longer due to the complexity of the vehicles.
  • Fuel Consumption: Cars with 400 horsepower tend to consume a lot of fuel, which can be costly in the long run.
  • Potential for Previous Abuse: High-performance cars are often driven hard. This can lead to more wear and tear. A thorough inspection and service history are essential.


  • Performance: The thrill of driving a high-performance car is unmatched. Acceleration, handling, and the overall driving experience are significantly enhanced.
  • Status and Enjoyment: Owning a powerful car can be a source of pride and enjoyment. It often turns heads and can be a great conversation starter.
  • Potential Investment: Some high-performance cars appreciate in value over time, especially if they are kept in good condition and are sought after by collectors.


Remember, the key to finding the right car is patience and diligence. Ensure you are well-informed about the specific model you’re interested in and always have a professional inspection before finalizing your purchase. 

With careful planning and consideration, you can find a powerful and enjoyable car without breaking the bank.

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