2018 Mercedes-Benz Models: The Full Lineup & Used Buyer’s Guide

The 2018 model year is a sweet spot if you’re shopping used Mercedes-Benz right now. It’s old enough to have shed the brutal first-owner depreciation, new enough to have Apple CarPlay, modern driver aids, and the 9-speed automatic across most of the range. And the 2018 lineup itself was a busy one: a fully redesigned S-Class flagship, a new E-Class Coupe and Cabriolet, AMG’s reach expanding into SUVs and the GT lineup, and a model count north of 30 distinct body styles before you even start counting AMG variants.

This guide walks the entire 2018 Mercedes-Benz lineup by body type — sedans, coupes and convertibles, SUVs, roadsters, and the AMG performance cars. For each, you get the original starting MSRP, what was actually new for 2018, and a used-market read in 2026: what they’re worth, what breaks, and which ones are the smart buys.

Table of Contents

• TLDR: The Quick Picks
• Sedans
• Coupes & Convertibles
• SUVs
• Roadsters
• AMG Performance Models
• 2018 Mercedes-Benz Reliability & Common Issues
• Best-Value Picks for a 2026 Used Buyer

TLDR: The Quick Picks

If you don’t want to read the whole lineup:

• Best all-around used buy: 2018 E300 or E400. The W213 E-Class was barely two years old in 2018, drives like a baby S-Class, and used prices have settled into genuine bargain territory.
• Best value SUV: 2018 GLC300. The right size, the best resale of the SUV range, and the turbo four is cheap to feed.
• Best cheap entry into the brand: 2018 CLA250 or C300. Lots of car for the money now, with the usual caveat that the CLA is front-drive-based and feels it.
• Best enthusiast pick: 2018 C63 S or AMG GT. The 4.0L biturbo V8 (M177/M178) is one of the great modern Mercedes engines.
• The flagship flex: 2018 S560. All-new that year, and the depreciation on a six-figure car is somebody else’s problem now.

Original 2018 MSRPs ran from roughly $32,400 for a CLA250 up to $130,000-plus for a loaded S-Class and well past $150,000 for the top AMG GT R.

Sedans

The sedan range was the core of the 2018 lineup, spanning four size classes from the compact CLA to the full-size S-Class.

CLA (CLA250 / CLA250 4MATIC) — Starting around $32,400. The cheapest way into a three-pointed star. It’s a “four-door coupe” built on the front-drive MFA platform shared with the GLA, with a 208-hp 2.0L turbo four and a 7-speed dual-clutch. Tight back seat, firm ride, but it looks the part. Used in 2026, clean examples sit in the $13,000–$18,000 range.

C-Class (C300 / C300 4MATIC) — Starting around $40,250 for the C300. The W205 C-Class was the volume luxury sedan, with a 241-hp 2.0L turbo four and the 9-speed automatic. For 2018, Mercedes folded the old C350e plug-in into the lineup and kept the cabin near the top of the class. Expect $17,000–$24,000 used.

E-Class (E300 / E400 4MATIC) — Starting around $53,500 for the E300. This is the standout. The W213 E-Class arrived for 2017, so 2018 cars are early in a still-current-feeling generation. The E300 uses the 241-hp 2.0L turbo; the E400 steps up to a 329-hp 3.0L biturbo V6. Semi-autonomous Drive Pilot and a dual-12.3-inch screen option made it feel a class above. Strong used value at $22,000–$30,000.

S-Class (S450 / S560 / S65) — Starting around $89,900 for the S450. The big news of 2018: the W222 S-Class got a major mid-cycle refresh, and the old turbo V6 and V8 names were retired. In came the S450 with a new 362-hp 3.0L biturbo V6 and the S560 with a 463-hp 4.0L biturbo V8 (replacing the old 4.7L S550). The V12 S65 AMG soldiered on at the top. These were $90k–$160k cars new; in 2026 a clean S560 lands around $40,000–$55,000, which is a lot of flagship for the money — provided the maintenance was done. If you’re cross-shopping older flagships, it’s worth seeing how it stacks up against the previous generation of 2000s luxury cars that defined the segment before it.

Coupes & Convertibles

Mercedes ran a deep two-door catalog in 2018, and this is where the year’s product activity really showed up.

C-Class Coupe & Cabriolet (C300) — Two-door versions of the W205, sharing the 2.0L turbo. The Cabriolet’s AIRCAP and AIRSCARF (a neck-level heater vent in the seats) made open-top driving viable later into the year. Starting in the low $40,000s new.

E-Class Coupe & Cabriolet (E400) — All-new for 2018. Mercedes moved the E-Class two-doors onto the new W213 architecture and dropped the pillarless coupe look that the brand does so well. Powered by the 329-hp 3.0L biturbo V6. The Cabriolet arrived as the open-air flagship of the mid-size range. Starting around $54,000 new; $28,000–$36,000 used.

S-Class Coupe & Cabriolet (S560) — The grand-touring two-doors, now badged S560 with the new 463-hp 4.0L biturbo V8 after the 2018 naming change. Magic Body Control with curve tilting let the coupe lean into corners like a motorcycle. Six-figure cars new, and rare enough used that condition matters more than the mileage number.

SLC (SLC300 / SLC43 AMG) — The folding-hardtop two-seater formerly known as the SLK. The SLC300 used the 2.0L turbo; the SLC43 AMG brought a 362-hp 3.0L biturbo V6. 2018 was near the end of the road for this model, which makes surviving examples a tidy little weekend car. Started around $48,000.

SUVs

The crossover and SUV range was already the brand’s sales engine in 2018, and it covered every size from subcompact to three-row full-size.

GLA (GLA250 / GLA250 4MATIC) — Starting around $33,400. The subcompact, built on the same front-drive platform as the CLA, with the 208-hp 2.0L turbo. More hatchback than SUV in feel. Used: $15,000–$20,000.

GLC (GLC300 / GLC300 4MATIC) — Starting around $40,050. The compact GLC was — and is — the sweet spot of the SUV lineup. The 241-hp 2.0L turbo, a genuinely nice cabin, and the best resale in the range. The swoopy GLC Coupe also joined for buyers who’d trade cargo room for style. This is the used SUV to target: $22,000–$30,000.

GLE (GLE350 / GLE400 / GLE550e) — Starting around $52,200. The mid-size two-row, still wearing the older M-Class-derived body in 2018 before the big 2020 redesign. The GLE350 ran a 3.5L V6; the GLE400 a biturbo V6; and the GLE550e was a plug-in hybrid. Solid, if a bit dated next to the GLC. Used: $24,000–$34,000.

GLS (GLS450 / GLS550) — Starting around $68,700. The full-size three-row — the “S-Class of SUVs.” The GLS450 used a 362-hp biturbo V6, the GLS550 a 449-hp biturbo V8. Big, comfortable, thirsty. Used family-hauler value at $32,000–$45,000.

G-Class (G550 / AMG G63) — Starting around $124,500. 2018 was the final year of the original boxy G-Wagen before the 2019 ground-up redesign, which makes it a milestone year. The G550 ran a 416-hp 4.0L biturbo V8. These barely depreciate; a 2018 G550 can still command $90,000-plus in 2026, and the AMG G63 more. If you’d rather start fresh, the redesigned truck shows up in our rundown of 2019 car models alongside the rest of that year’s launches.

Roadsters

SL (SL450 / SL550 / SL63 AMG / SL65 AMG) — Starting around $86,950 for the SL450. The grand-touring folding-hardtop roadster, refreshed for 2017 and carried into 2018. The SL450 used a 362-hp biturbo V6, the SL550 a 449-hp biturbo V8, with AMG’s SL63 and V12 SL65 on top. A proper two-seat cruiser, not a track car. Used SL550s land around $45,000–$60,000.

AMG GT Roadster — The open-top version of AMG’s halo sports car (covered below), sharing the front-mid-engine 4.0L biturbo V8 layout. New for the GT family’s expansion, and priced well into six figures.

AMG Performance Models

2018 was a banner year for AMG. The sub-brand stretched across nearly every body style, and the 4.0L biturbo V8 (M177) plus the related M178 in the GT cars anchored the lineup.

AMG GT / GT C / GT R — AMG’s front-mid-engine sports car expanded its range for 2018. The base GT made 469 hp, the GT C 550 hp, and the track-focused GT R — with its big rear wing and rear-wheel steering — 577 hp from the dry-sump 4.0L biturbo V8. The GT R is the collectible of the bunch; original MSRP cleared $157,000.

C63 / C63 S — The 4.0L biturbo V8 in a compact body, making 469 hp (C63) or 503 hp (C63 S). Available as sedan, coupe, and cabriolet. The enthusiast’s value pick of the whole lineup — a hand-built V8 in a usable size.

E63 S — The 603-hp super-sedan, with the M177 biturbo V8, standard AMG 4MATIC+ all-wheel drive, and a Drift Mode that sends all the power rearward. One of the fastest four-doors of its era.

GLC63 / GLC63 S — New for 2018. AMG dropped the 4.0L biturbo V8 into the compact GLC SUV and its coupe sibling, making up to 503 hp. A genuine novelty: a V8 hot-rod crossover the size of a GLC.

GLE63 S, GLS63, G63 — The V8 AMG treatment applied to the larger SUVs, plus the outgoing G63 in its final original-body year.

AMG GT 4-Door note: the four-door GT sedan didn’t arrive until the 2019 model year, so a “2018 AMG GT” is always the two-seat coupe or roadster — worth knowing if a listing’s badging looks off.

2018 Mercedes-Benz Reliability & Common Issues

The 2018 model year benefits from being late in most generations’ lifecycles, so the early-production gremlins had been sorted. Per Consumer Reports and owner-survey data, Mercedes-Benz generally lands mid-pack for reliability — better than its worst years, but with real ownership costs you should budget for.

What to watch on a 2018 used car:

• The 2.0L turbo four (M274): Generally solid, but watch for oil leaks from the valve cover and around the turbo. Some owners report carbon buildup typical of direct-injection engines — a walnut-blast service every 60k–80k miles isn’t unusual.
• The 3.0L biturbo V6 (M276 DELA): Reliable, but check for coolant and oil seepage. Expensive when it does need attention.
• The 4.0L biturbo V8 (M177/M178): A strong engine, but service it religiously. Earlier biturbo V8s had cases of camshaft and timing wear when neglected; full records matter more than mileage here.
• 9G-Tronic automatic: Smooth, but a few cars need a valve-body or conductor-plate fix. A flush on schedule keeps it happy.
• Air suspension (AIRMATIC): Standard on S-Class, GLS, GLE550e, and some others. Compressors and struts are a known wear item and a four-figure repair. Confirm it holds height overnight before you buy.
• Electronics and infotainment (COMAND): The pre-MBUX system is fine but dated; check that all screens, cameras, and the touchpad work, since modules are pricey.

The general rule with any used Mercedes from this era: a $25,000 car with a complete service history beats a $20,000 one without it. Always pull a vehicle history report and decode the VIN to confirm the exact trim and build.

Best-Value Picks for a 2026 Used Buyer

If you’re shopping the 2018 Mercedes-Benz lineup today, here’s where the value actually sits:

• Smartest daily driver: E300 / E400. Still feels current, drives beautifully, and the depreciation curve has flattened. The single best balance of the lineup.
• Smartest SUV: GLC300. Holds value, costs the least to run of the SUVs, and isn’t too big.
• Cheapest badge: C300 or CLA250 if you want the star for the least money — just go in clear-eyed about the front-drive CLA’s roots.
• Most car for the money: S560. A 2018 flagship for the price of a new economy SUV. Only with full records and a pre-purchase inspection on the air suspension.
• Enthusiast’s keeper: C63 S or AMG GT. The biturbo V8 cars are the ones people will still want in ten years.

The 2018 model year sits at the point where Mercedes-Benz depreciation works in the buyer’s favor without the cars feeling old. Match the model to how you’ll actually use it, insist on service history, and the 2018 lineup has a genuinely strong buy in nearly every body style.