How much is a 2018 BMW 4 SeriesDiesel worth in Ireland?

The median asking price for a 2018 BMW 4 SeriesDiesel on the Irish used-car market is around €26,450, based on 6 live listings tracked by Carintel.ie.

How much does a 2018 BMW 4 Series depreciate per year?

A BMW 4 Series loses roughly 13.3% 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 BMW 4 Series 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 BMW 4 SeriesDiesel?

This page estimates annual running costs for a 2018 BMW 4 SeriesDiesel 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

Switch powertrain:Diesel · 57 Petrol · 11 Overview

Engine:All engines 1.5L · 4 2.0L · 47 3.0L · 6

Filter by trim, gearbox

Gearbox:Manual · 3 Automatic · 1

Market Intelligence

BMW 4 Series2018

Diesel · 3.0L

€28,450ROI listing median

26 days avg on market · Low data confidence

High DemandLimited Data

Listing price range

€27k – €32k

25th to 75th percentile

Listings

ROI active now

Updated 9h ago · ROI · Low confidence

Median listing price

€28,450

private sale ~€26,493 Pricing assumptionsAssumptions· Good condition, full service history· No outstanding finance or damage· Based on ads seen in the past 30 days

Est. trade-in

€18,865 – €22,908

15–30% below private sale

Avg mileage

121k km

typical 123k km

Days listed

26d

avg on market · demand 94/100

AI Market Summary

Diesel engines prone to DPF clogging on urban/low-mileage driven cars; forced regeneration cycles costly if neglected or ignored.
Timing chain rattle on cold starts (N47D20 models especially) signals tensioner wear—listen carefully during pre-purchase inspection; can escalate fast.
Fuel injector carbon buildup causes rough idle and power loss; direct-injection engines need quality fuel and regular motorway miles to stay clean.
Well-priced relative to petrol rivals; demand steady at 31-day average, but reliability score (3/10) reflects real ownership costs—budget for DPF/injector work.
Before purchase, request full DPF regeneration history and ask dealer to document any timing chain noise on engine start; ask owner about fuel grade used.

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

Analysis & Insights

Price Analysis Costs Import Recalls & Info

Total cost of ownership

2018 BMW 4 Series · Diesel · per year

Estimated annual cost

€6,358/yr

Per month

€530/mo

Depreciation

€3,518

55% of total

Fuel / electricity

€1,690

27% of total

Maintenance

€950

15% of total

Road tax

€200

3% of total

Assumptions: Depreciation based on €26,450 current market median at 13.3%/yr (regression from 6 listings across multiple years). Fuel cost assumes 16,000 km/yr (CSO Ireland average), Irish fuel prices. Road tax uses Irish CO2-based motor tax bands (NEDC regime). Maintenance is an AI estimate based on typical independent garage rates for this model.

Annual running cost

16,000 km/yr · Ireland rates

BMW 4 Series 2018, all powertrain variants

Market-level estimate

All available fuel types sorted cheapest to run · WLTP figures where available · current market highlighted

DieselDieselthis marketcheapest to run

−48%€1,890/yr

4.8 L/100 km, diesel

Fuel €1,690/yrRoad tax €200/yr

median €24,130

PetrolPetrol

€3,650/yr

7.5 L/100 km, petrol

Fuel €2,400/yrRoad tax €1,250/yr

median €27,495

Assumptions: 16,000 km/yr (CSO Ireland average). Fuel: petrol €2.00/L, diesel €2.20/L. EV: smart-night €0.17/kWh (80%), day €0.30/kWh (20%). PHEV split: 45% electric, 55% petrol. WLTP consumption figures used where available; real-world usage is typically 10-20% higher. Road tax uses Irish CO2-based motor tax bands (NEDC regime, 2008-2020 registrations).

Annual maintenance

AI estimate · Irish independent garage rates

Maintenance costs

€950

estimated per year

Diesel variants require DPF cleaning or regeneration every 60–80k miles (€150–€300); timing chain inspection recommended at 80k miles; budget for potential injector service at higher mileage.

Annual serviceOil and filter change (5.2L 5W-30 synthetic), air filter, fuel filter; typically €320–€450 at independent garage

€380/yr

Tyres (amortised)Replacement every 4–5 years; premium brands €160–€220 per tyre fitted

€180/yr

Brakes (amortised)Front and rear pads every 40–60k miles; discs every 80k; €350–€600 for a full set

€200/yr

NCT (amortised)€55 every 2 years; diesel models generally pass without issue if DPF is clean

€28/yr

Consumables & miscellaneousAdBlue (if SCR equipped), cabin filter, spark plugs (N/A for diesel), coolant top-up, and minor repairs

€162/yr

AI-generated estimate · costs vary by usage and service history · not a financial forecast