How much is a 2018 Mercedes-Benz S-ClassDiesel worth in Ireland?

The median asking price for a 2018 Mercedes-Benz S-ClassDiesel on the Irish used-car market is around €54,000, based on 3 live listings tracked by Carintel.ie.

How much does a 2018 Mercedes-Benz S-Class depreciate per year?

A Mercedes-Benz S-Class loses roughly 16.0% of its value per year on the Irish used-car market based on Carintel.ie's regression across active listings.

Is it cheaper to import a 2018 Mercedes-Benz S-Class from Northern Ireland?

It depends on spec, mileage and CO2. Carintel.ie compares ROI median prices against Northern Ireland listings' landed cost, including VRT, NOx levy and registration fees, so you can see the saving at a glance on this page.

What are the running costs of a 2018 Mercedes-Benz S-ClassDiesel?

This page estimates annual running costs for a 2018 Mercedes-Benz S-ClassDiesel using WLTP consumption data, current Irish fuel and electricity prices, and Irish motor tax bands.

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Analysing market data

Fetching listings · computing fair value · building charts

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Trim:AMG · 2 Unknown · 1

Market Intelligence

Mercedes-Benz S-Class2018

Diesel

€54,000ROI listing median

32 days avg on market · Low data confidence

High DemandLimited Data

Listing price range

€34k – €55k

25th to 75th percentile

Listings

ROI active now

Updated 5h ago · ROI · Low confidence

Median listing price

€54,000

private sale ~€47,606 Pricing assumptionsAssumptions· Good condition, full service history· No outstanding finance or damage· Based on ads seen in the past 30 days

Est. trade-in

€23,450 – €28,475

15–30% below private sale

Avg mileage

121k km

typical 84k km

Days listed

32d

avg on market · demand 83/100

AI Market Summary

Diesel S-Class offers strong performance and refinement; excellent motorway cruiser with low running costs for mileage.
Median price €54k sits mid-range — good value for luxury saloon, but verify service history and ownership count.
W222 diesel models (2018+) generally solid; watch for AdBlue system issues and DPF regeneration faults on higher-mileage examples.
Before purchase, obtain full Mercedes service record and inspect recent AdBlue top-ups — neglect here risks expensive repairs.
Mileage at 84k is slightly below Irish average for 8 years old; confirm records align with stated usage and service intervals.

AI-generated analysis · Carintel.ie · verify independently before purchasing

Analysis & Insights

Price Analysis Costs Import Recalls & Info

Vehicle specification

Manufacturer WLTP data

Power

443 bhp

Torque

750 Nm

554 lb·ft

0–62 mph

5.1s

155 mph top

Engine

2.9L

2900 cc

Boot space

455L

Seats

5 doors

Fuel economy & emissions

Combined

39.4 mpg

7.45 L/100km

Urban

30.55 mpg

Extra urban

47.05 mpg

CO₂

181 g/km

EURO 6

Fuel tank

75L

Dimensions

Length

5.16m

5161 mm

Width

1.91m

Height

1.46m

Wheelbase

3.06m

Kerb weight

2,028 kg

2,628 kg gross

Safety & ownership

Insurance

Group 48E

Warranty

3 years

Reliability & Safety Recalls

Mercedes-Benz S-Class 2018

Reliability

3/5

The 2018 S-Class diesel (OM656 engine) is a sophisticated executive sedan with strong engineering but high complexity and expensive repairs. Ownership is reliable if well-maintained, but costs escalate quickly due to diesel particulate filter issues, AdBlue system problems, and premium labour rates. Not recommended unless you have substantial service budget and access to specialist diagnostics.

Known issues

DPF regeneration cycles fail frequently, leading to limp mode and expensive cleaning/replacement (€1,500–€3,000)
AdBlue system malfunction and NOx sensor faults causing warning lights and reduced performance
Diesel injector carbon build-up on OM656 engine, particularly with low-mileage or short-journey driving
Automatic gearbox (9G-Tronic) hesitation and jerky shifts, sometimes requiring software updates or valve body replacement
Air suspension (E-AIRMATIC) compressor failure and sensor faults leading to uneven ride height or system shutdown
Turbocharger wastegate sticking, reducing boost pressure and fuel economy

Good for

Smooth, quiet motorway cruising with excellent refinement and comfort for long distances
Strong low-end torque (400 Nm) and real-world fuel economy of 35–42 mpg under gentle driving
Luxurious interior technology, safety features, and build quality for premium ownership
Excellent resale value if maintenance history is complete and major components are sound

Years to avoid: 2018, 2019

AI-generated summary · verify with DVSA & owner forums