Your Guide to Mercedes Car Sizes

Say the name Mercedes-Benz and most people picture one car, but the sedan lineup actually spans four distinct sizes. This guide breaks down the real dimensions behind each one, so you can match a new Mercedes car to your commute, your parking situation, and your household before you ever step onto our lot.

New Mercedes cars come in four sedan sizes: the compact CLA (184.6 inches), the C-Class (187 inches), the midsize E-Class (194.9 inches), and the full-size S-Class (209.5 inches). Starting MSRP ranges from an estimated $42,750 to $119,500 depending on size and trim.

At Mercedes-Benz of Portsmouth, our team has helped Seacoast area drivers navigate this exact lineup for years, from first-time buyers eyeing the CLA to longtime owners upgrading into an S-Class. By the end of this guide, you’ll know which Mercedes-Benz sedan fits your driveway, your commute, and your household, down to the inch.

Key Points: New Mercedes Cars Near Portsmouth

• The size gap between the smallest and largest Mercedes-Benz sedan is more than two feet. The CLA measures 184.6 inches long, while the S-Class stretches to 209.5 inches, a 24.9-inch difference that shows up in parking, turning radius, and rear legroom. 
• Cargo space doesn’t always scale with length. The CLA and C-Class both offer 11.6 cubic feet of trunk space, even though the C-Class runs 2.4 inches longer bumper to bumper. 
• There’s a size and a budget for nearly every Seacoast driveway. Starting MSRP ranges from an estimated $42,750 for the CLA to $119,500 for the S-Class, giving Portsmouth area shoppers a real ladder to climb, not one all-or-nothing choice.

Mercedes-Benz Sedan Sizes at a Glance

Numbers tell the size story better than words ever could. Here’s how the four Mercedes-Benz sedans compare before we get into the specifics of each one.

Length figures are manufacturer-published exterior measurements. Prices are manufacturer’s suggested starting retail price and exclude taxes, title, registration, and dealer fees. Contact Mercedes-Benz of Portsmouth for current availability and pricing.

A few things stand out once you line these four sedans up side by side. The CLA and C-Class share identical trunk space at 11.6 cubic feet, even though the C-Class runs 2.4 inches longer overall, since that extra length goes toward the cabin and wheelbase rather than the trunk. Jump from the C-Class to the E-Class and the wheelbase grows by nearly four inches, a change you feel in rear legroom more than in the parking lot. And at the top of the lineup, the S-Class isn’t just the longest sedan, it’s also the roomiest, with 43.8 inches of rear legroom, more than any other Mercedes-Benz sedan in the lineup.

The Mercedes-Benz CLA: The Most Compact Way Into a New Mercedes

The Mercedes-Benz CLA is a compact sedan styled as a four-door coupe. A four-door coupe is a sedan body style that pairs four doors with the lower, more sloped roofline usually associated with two-door coupes. At 184.6 inches long on a 107.4-inch wheelbase, the CLA is the easiest Mercedes-Benz sedan to park in downtown Portsmouth or along the Seacoast’s tighter town centers. Trunk space measures 11.6 cubic feet, and starting MSRP runs an estimated $42,750. Mercedes-Benz also builds an electric CLA with EQ Technology on the same compact footprint, starting closer to $47,250, for shoppers who want the size without the gas engine.

The Mercedes-Benz C-Class: A Compact Luxury Sedan That Still Feels Substantial

The Mercedes-Benz C-Class steps up from the CLA in both size and stance, measuring 187 inches long on a 112.8-inch wheelbase. That extra 5.4 inches of wheelbase compared to the CLA translates into more usable rear seat space, without pushing the C-Class into a bigger price bracket than most daily commuters want to consider. Starting MSRP runs an estimated $49,650, with up to an estimated 255 horsepower in the C 300. Trunk space matches the CLA at 11.6 cubic feet. For Seacoast area drivers who want a Mercedes-Benz that still feels manageable on tight coastal roads but seats four adults comfortably, the C-Class lands in that middle ground.

The Mercedes-Benz E-Class: A Midsize Sedan Built for Longer Drives

The Mercedes-Benz E-Class moves into midsize territory, measuring approximately 194.9 inches long on a 116.6-inch wheelbase, a meaningful jump from the C-Class. That longer wheelbase shows up directly in rear legroom, which matters for anyone who regularly drives clients, family, or friends toward Boston or up to Portland, Maine. Trunk space grows to 12.7 cubic feet, and starting MSRP runs an estimated $63,900 with up to an estimated 255 horsepower in the E 350. This is the size where a Mercedes-Benz sedan starts to feel like a genuine highway cruiser rather than a city car.

The Mercedes-Benz S-Class: The Full-Size Flagship

The Mercedes-Benz S-Class sits at the top of the sedan lineup, in size and in what it’s built to deliver. At 209.5 inches long on a 126.6-inch wheelbase, it runs nearly two feet longer than the CLA. Rear legroom reaches 43.8 inches, the most of any Mercedes-Benz sedan in the lineup, and trunk space tops out at 12.8 cubic feet. Starting MSRP runs an estimated $119,500, with up to an estimated 442 horsepower in the S 500. For Seacoast area buyers who want the full-size flagship experience, whether that means chauffeured rear-seat comfort or simply the most substantial Mercedes-Benz sedan on the road, the S-Class is built for exactly that.

Which Mercedes-Benz Sedan Size Fits Your Life?

The right size comes down to where you park, how far you drive, and who rides along:

• Parking in downtown Portsmouth or a tight coastal driveway: The CLA’s 184.6-inch length is the easiest fit.
• A daily Seacoast commute with occasional passengers: The C-Class balances a compact footprint with real rear seat room.
• Regular highway trips toward Boston or Portland, Maine: The E-Class’s longer wheelbase adds comfort for the miles that add up.
• Maximum space and rear-seat comfort: The S-Class delivers the most legroom and cargo space in the lineup.

If you’d rather skip the gas engine entirely, Mercedes-Benz builds electric sedans at nearly every size tier, too. The EQE Sedan roughly mirrors the E-Class in size and market position, and the EQS Sedan matches the S-Class as a flagship-tier option. We cover both in our guide to electric Mercedes-Benz models near Portsmouth.

Find Your Right-Sized Mercedes-Benz at Mercedes-Benz of Portsmouth

All four sedans, the CLA, C-Class, E-Class, and S-Class, are in stock at Mercedes-Benz of Portsmouth, located at 309 Portsmouth Ave in Greenland, NH, serving Portsmouth and the greater Seacoast region.

Browse our current new Mercedes-Benz inventory online, or schedule a test drive to sit in each size for yourself. The best way to find your right fit is behind the wheel, not on a spec sheet.