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

The median asking price for a 2018 Mercedes-Benz C-ClassDiesel on the Irish used-car market is around €24,198, based on 8 live listings tracked by Carintel.ie.

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

A Mercedes-Benz C-Class loses roughly 15.4% 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 C-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 C-ClassDiesel?

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

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Data and calculations are in active development and changing regularly. Please do not make buying decisions based solely on this site, always verify with other sources.

Analysing market data

Fetching listings · computing fair value · building charts

Engine:All engines 1.6L · 10 2.0L · 8 2.1L · 31

Filter by trim, gearbox, source

Trim:AMG · 2 AMG Line · 1 Avantgarde · 1 SE Executive Edition · 1 Unknown · 1

Source:ROI All NI

Market Intelligence

Mercedes-Benz C-Class2018

Diesel · 2.0L

€22,698ROI listing median

NI import est.€23,755

ROI cheaper by ~€1,057

33 days avg on market · Low data confidence · VRT based on A8 (106–110 g/km) (17%), Revenue uses OMSP

High DemandMedium Confidence

Listing price range

€20k – €24k

middle 50% of listings

Listings

ROI active now

Updated 10h ago · ROI · Low confidence

Expected price

Est. trade-in

Avg mileage

151k km

typical 140k km

Days listed

33d

avg on market · demand 90/100

AI Market Summary

Solid all-rounder: strong performance, refined cabin, excellent on motorway fuel economy — typical Mercedes feel at mid-range price.
Fairly valued right now. Price uptick reflects demand; competitive against comparable Audi A4/BMW 3-Series, though watch for overpriced outliers above €24k.
Diesel engines here have form: DPF clogging on short-trip drivers, EGR carbon build-up, injector fouling common. Budget €800–1,500 for DPF work alone.
Before buying, get a full pre-purchase diesel health check — compression test, injector flow scan, and DPF regeneration history from seller essential.
Verify NCT status and any recent warning lights logged. At 140k km median, this car is mid-life; confirm service records back to purchase.

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

Analysis & Insights

Price Analysis Costs Import Recalls & Info

Vehicle specification

Manufacturer WLTP data

Power

134 bhp

Torque

310 Nm

229 lb·ft

0–62 mph

9.7s

135 mph top

Engine

1.6L

1600 cc

Boot space

480L

1480L folded

Seats

4 doors

Fuel economy & emissions

Combined

68.30000000000001 mpg

4.15 L/100km

Urban

56.7 mpg

Extra urban

76.55000000000001 mpg

CO₂

108 g/km

EURO 6

Fuel tank

53L

Dimensions

Length

4.69m

4686 mm

Width

1.81m

Height

1.45m

Wheelbase

2.84m

Kerb weight

1,495 kg

2,065 kg gross

Safety & ownership

Euro NCAP

★★★★★

Adult 92% · Child 84%

Insurance

Group 25E

Warranty

3 years

Reliability & Safety Recalls

Mercedes-Benz C-Class 2018

Reliability

3/5

The 2018 Mercedes-Benz C-Class diesel offers refined performance and strong build quality, but diesel engines from this era are prone to DPF and emissions system issues that can be costly to repair. Ownership experience is generally positive for well-maintained examples, though independent servicing is strongly recommended to avoid main dealer premiums. Value for money is moderate given repair risks and depreciation.

Known issues

DPF (diesel particulate filter) clogging and regeneration issues, particularly on low-mileage or short-trip driving; can result in limp mode and €800–1,500 repair costs
EGR valve carbon build-up and sticking, leading to rough idle, reduced power, and potential engine management light
Diesel injector fouling and common-rail pressure sensor faults, causing difficult cold starts and white smoke
Transmission fluid leaks from the 7-speed automatic gearbox; relatively minor but requires seal replacement
AdBlue system faults and NOx sensor degradation; reduced performance and warning lights if not addressed
Timing chain rattle on cold start (Mercedes M270/M274 petrol engines, not diesel; OM651 diesel is generally chain-driven and more reliable in this regard)

Good for

Fuel economy and range on the motorway; real-world combined economy around 45–50 mpg with careful driving
Refined NVH (noise, vibration, harshness); cabin is quiet and comfortable for long journeys
Solid build quality, interior materials, and German engineering; feels premium for the class
Strong resale value and parts availability through independent specialists and used breakers

Years to avoid: 2015, 2016, 2017

AI-generated summary · verify with DVSA & owner forums