If you’re shopping for a new vehicle, you might be asking yourself, what is a full size car? A full-size car offers maximum passenger and cargo space within a traditional sedan body style, prioritizing comfort for long journeys. These vehicles are designed for those who need room for five or six adults and their luggage without stepping up to an SUV or minivan.
In this guide, we’ll explain everything you need to know. We’ll cover their defining features, how they compare to other vehicle classes, and key models to consider. By the end, you’ll know if a full-size sedan is the right choice for your needs.
What Is A Full Size Car
A full-size car, often called a “large car,” is a passenger vehicle classification defined by the U.S. Environmental Protection Agency (EPA). The EPA uses interior volume index—the combined total of passenger and cargo space—to categorize cars. For a sedan to be considered full-size, it typically must have an interior volume index of at least 120 cubic feet.
Historically, these were the flagship models of American automakers, like the Chevrolet Impala and Ford Crown Victoria. Today, the segment includes sophisticated sedans from various brands that emphasize space, smooth rides, and powerful engines. They are the pinnacle of traditional sedan comfort.
Key Characteristics Of Full Size Sedans
Full-size cars share several distinct traits that set them apart from smaller sedans and crossovers.
Spacious Interior Dimensions
The most obvious feature is abundant space. These cars provide exceptional legroom, headroom, and shoulder room in both the front and rear seats. Adults can sit comfortably in the back for hours. The trunk is also notably large, often exceeding 16 cubic feet, making it ideal for family trips or golf bags.
Powerful Engine Options
To move their larger frames, full-size sedans are usually equipped with robust engines. Common configurations include:
- V6 engines for a balance of power and efficiency.
- V8 engines in performance-oriented models for significant horsepower.
- Turbocharged four-cylinder engines in some modern versions for improved fuel economy.
Prioritization Of Ride Comfort
Comfort is king. These cars feature soft, plush seating materials and suspension systems tuned to absorb road imperfections. The goal is a quiet, isolated, and serene driving experience, especially on highways. Noise insulation is typically superior to that found in smaller cars.
Higher Price And Operating Costs
The added size, power, and luxury come at a cost. Full-size sedans generally have:
- A higher initial purchase price compared to mid-size or compact cars.
- Lower fuel economy due to their weight and larger engines.
- Potentially higher insurance and maintenance costs.
Full Size Car Vs. Other Vehicle Classes
It’s easy to confuse a full-size sedan with other large vehicles. Here’s how they stack up against common alternatives.
Full Size Car Vs. Mid Size Car
This is the most common comparison. Mid-size cars (like the Toyota Camry or Honda Accord) are smaller, more efficient, and often more affordable. Full-size cars offer more interior room in every direction and a generally smoother, more powerful drive. Choose a mid-size for daily efficiency; choose a full-size for maximum passenger comfort.
Full Size Sedan Vs. Full Size SUV
Both offer lots of space, but in different packages. A full-size SUV (like a Chevrolet Suburban) provides higher seating, optional third-row seating, and greater cargo versatility, especially for bulky items. A full-size sedan offers better fuel economy, superior on-road handling, and a lower step-in height. The SUV is for ultimate utility; the sedan is for ultimate on-road comfort.
Full Size Vs. Luxury Sedans
There is significant overlap here. Many full-size cars are also luxury sedans (e.g., BMW 7 Series, Mercedes-Benz S-Class). However, the term “full-size” strictly refers to dimensions, while “luxury” refers to the level of amenities, technology, and build quality. You can find full-size cars at non-luxury price points, though most modern examples lean toward premium features.
Popular Full Size Car Models: Past And Present
The full-size segment has evolved. Here are some iconic and current models that define the category.
Classic American Full Size Cars
These models ruled the roads for decades and set the standard for size and comfort.
- Ford Crown Victoria: A favorite of taxi fleets and police departments, known for its durability and body-on-frame construction.
- Chevrolet Impala: A mainstream icon that offered family-friendly space and reliability for generations.
- Dodge Charger: While its modern version is a muscle car, earlier generations were classic full-size cruisers.
Modern Full Size Sedan Offerings
Today’s market is smaller but focused on luxury and technology. Leading models include:
- Genesis G90: Offers exceptional value, with luxury and features rivaling German brands at a lower cost.
- Kia K900: Similar to the Genesis, it brought full-size luxury to a more accessible price point.
- Chrysler 300: One of the last traditional, bold-styled American full-size sedans, often with rear-wheel drive.
Note that many traditional models, like the Ford Taurus and Chevrolet Impala, have been discontinued as consumer preference shifted to SUVs.
Advantages Of Choosing A Full Size Car
Why would you choose a large sedan in an SUV-dominated world? The benefits are specific and compelling for the right buyer.
Superior Passenger Comfort
No other vehicle type in its price range offers the same level of stretch-out space and seat comfort for four or five adults. Long trips become less taxing, and rear-seat passengers are treated as well as those in the front.
Excellent Highway Performance
These cars are built for the open road. Their long wheelbases contribute to stable, confident handling at high speeds. The powerful engines make merging and passing effortless, and the quiet cabins reduce driver fatigue.
Large Trunk Capacity
The trunk design of a sedan often offers more usable, protected space than the open cargo area of an SUV. You can easily fit multiple large suitcases or a significant amount of groceries without folding any seats.
Perceived Prestige And Style
A well-appointed full-size sedan often carries a sense of occasion and sophistication. Its lower, sleeker profile compared to an SUV is seen as more elegant and driver-focused by many enthusiasts.
Disadvantages And Considerations
Of course, full-size cars are not perfect for every situation. It’s important to weigh these drawbacks.
Lower Fuel Economy Ratings
You will pay more at the pump. Even with modern efficiency tech, the laws of physics mean a larger, heavier vehicle requires more energy to move. Expect combined MPG figures to be several points lower than a mid-size sedan.
Challenging Urban Maneuverability
Their length and width can make them a handful in tight city streets, crowded parking lots, or small garages. Parallel parking requires more skill, and navigating narrow spaces can be stressful.
Higher Overall Ownership Costs
Beyond fuel, consider these expenses:
- Tires are larger and more expensive to replace.
- Insurance premiums can be higher due to repair costs and engine size.
- Some models may require premium gasoline.
Limited Ground Clearance
Unlike an SUV or crossover, a full-size sedan has low ground clearance. This makes it unsuitable for rough roads, deep snow, or any kind of off-pavement driving. You are confined to paved or well-maintained surfaces.
Who Should Buy A Full Size Car?
Given their pros and cons, a full-size sedan is an ideal fit for specific lifestyles.
- Frequent Long-Distance Travelers: If you regularly take highway trips or have a long commute, the comfort and stability are unmatched.
- Families With Older Children: For families that need to transport teenagers or adult children comfortably, the rear seat space is a major advantage.
- Drivers Who Prioritize Comfort: If a smooth, quiet ride is your top priority over utility or sporty handling, this is your category.
- Professionals Needing A Formal Image: Certain models project a professional, established image that can be preferable for client meetings.
How To Shop For A Used Full Size Sedan
The used market offers great value in this segment. Here’s a step-by-step guide to finding a good one.
Set Your Budget And Research Models
First, determine your total budget, including insurance and taxes. Then, research models known for reliability. Brands like Toyota (Avalon), Hyundai (Genesis), and certain years of American models have strong reputations. Avoid known problem years by checking owner forums.
Inspect For Common Mechanical Issues
When you view a car, pay special attention to these areas:
- Engine and Transmission: Listen for unusual noises. Test drive thoroughly to ensure smooth shifting and power delivery.
- Suspension Components: Worn shocks or struts are common on heavy cars. Listen for clunks over bumps and check for excessive body roll.
- Electronics: Test every feature—seat motors, infotainment screen, climate control, windows. These systems are complex and costly to fix.
Evaluate Ownership History And Costs
Always get a vehicle history report. Look for consistent maintenance records. Before buying, call your insurance agent for a quote and research local repair costs for that specific model to avoid suprises.
The Future Of The Full Size Car Segment
The segment has contracted but is not disappearing. It is transforming. The future lies in electrification and ultra-luxury. Models like the Lucid Air and Mercedes EQS are redefining the full-size car with electric powertrains, offering immense power with silent operation and low running costs. The traditional combustion-engine full-size sedan will likely become a niche product, preserved by a few brands for purists who value the classic driving experience.
Frequently Asked Questions (FAQ)
What is considered a full size car?
A full-size car is an EPA classification for sedans with an interior volume index of 120 cubic feet or more. They are characterized by maximum passenger space, large trunks, and powerful engines aimed at comfort.
What is the difference between a full size and a mid size car?
The main differences are size and priority. Full-size cars are larger in all interior dimensions, have more powerful standard engines, and focus on ride comfort. Mid-size cars are smaller, more fuel-efficient, and often prioritize a balance of comfort and agility.
Are full size cars good on gas?
Generally, no. They are among the least fuel-efficient passenger cars due to their weight and engine size. While modern models have improved, you should expect lower MPG than smaller vehicles, though they may match or beat a comparably sized SUV.
Is a Toyota Avalon a full size car?
Yes, the Toyota Avalon was consistently classified as a full-size sedan. It offered more interior space, particularly rear legroom, than the mid-size Camry, along with a smoother ride and more premium features before it was discontinued.
Why are full size sedans being discontinued?
Consumer demand has shifted dramatically toward SUVs and trucks. Many buyers percieve SUVs to offer more utility, safety, and modernity. The high development cost for low-volume sedans led most automakers to discontinue mainstream full-size models and focus on profitable trucks and SUVs.