How much is a 2018 Audi Q8Diesel worth in Ireland?

The median asking price for a 2018 Audi Q8Diesel on the Irish used-car market is around €51,475, based on 4 live listings tracked by Carintel.ie.

How much does a 2018 Audi Q8 depreciate per year?

A Audi Q8 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 Audi Q8 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 Audi Q8Diesel?

This page estimates annual running costs for a 2018 Audi Q8Diesel 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

Filter by trim, gearbox, source1 active

Source:ROI All NI

Market Intelligence

Audi Q82018

Diesel

€51,475ROI listing median

€57,238All listing median

NI import est.€56,653

ROI cheaper by ~€5,178

30 days avg on market · Low data confidence · VRT based on D (est. ~145 g/km) (27%), Revenue uses OMSP

Normal DemandLimited Data

Listing price range

€53k – €66k

25th to 75th percentile

Listings

all active now

Updated 7h ago · all · Low confidence

Median listing price

€57,238

private sale ~€54,811 Pricing assumptionsAssumptions· Good condition, full service history· No outstanding finance or damage· Based on ads seen in the past 30 days

Est. trade-in

€37,100 – €45,050

15–30% below private sale

Avg mileage

131k km

typical 125k km

Days listed

30d

avg on market · demand 49/100

AI Market Summary

Strong luxury SUV presence, excellent ride quality, and commanding driving position appeal to Irish premium buyers seeking prestige and comfort.
At €51,475, fairly priced within segment; demand remains steady at 30-day turnover, but four active listings suggest moderate rather than fierce competition.
DPF clogging is the critical weak point—inspect service history for forced regenerations or limp-mode incidents. Expect €800–€1,500 repairs if neglected. EGR carbon buildup also common; listen for rough idle on cold start.
Before purchase, request full Audi service history documenting DPF and EGR maintenance; have a pre-buy diagnostic scan to flag gearbox hesitation or stored emissions faults.
At 125k km, mileage sits comfortably within Irish average for age; confirm NCT status and motor tax band (CO2-based for 2008+) before committing.

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

Analysis & Insights

Price Analysis Costs Import Recalls & Info

Total cost of ownership

2018 Audi Q8 · Diesel · per year

Estimated annual cost

€10,759/yr

Per month

€897/mo

Depreciation

€6,846

64% of total

Fuel / electricity

€2,693

25% of total

Maintenance

€950

9% of total

Road tax

€270

3% of total

Assumptions: Depreciation based on €51,475 current market median at 13.3%/yr (regression from 4 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

Audi Q8 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

€2,963/yr

7.7 L/100 km, diesel

Fuel €2,693/yrRoad tax €270/yr

median €51,475

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 Q8 servicing is labour-intensive due to complex emissions control and gearbox diagnostics; budget for unexpected DPF cleaning or EGR valve work; avoid main Audi dealers and use trusted independents specialising in VW/Audi TDI engines to reduce costs.

Annual serviceOil and filter change (Castrol Edge or equivalent synthetic 5W-40, ~5 litres); air/cabin filter; labour ~2 hours

€420/yr

Tyres (amortised)Premium 275/50R20 replacements every 40,000 miles; high wear rate on heavy Q8

€180/yr

Brakes (amortised)Front brake pads and discs every 50,000–60,000 miles; rear less frequent

€120/yr

AdBlue top-up and system serviceAdBlue consumption ~1.5 litres/1000 km; annual heater and sensor health check advised

€80/yr

NCT (amortised)Biennial NCT €55 amortised; diesel engines prone to emissions test failures

€28/yr

Consumables and miscellaneousTransmission fluid check/top-up (€80); coolant renewal every 2 years (€80); spark plugs not applicable

€122/yr

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

Depreciation forecast

4 year-cohort data points

Recent ads: 13.3%/yrMedium confidence

Industry avg: 17.0%/yr

+2yr

€38.7k

-25%

pvt ~€36.0k

+5yr

€25.1k

-51%

pvt ~€24.7k

+10yr

€12.3k

-76%

pvt ~€11.6k

This Audi Q8 is holding its value 3.7% better than the industry average, suggesting strong demand.

Market rate from 4 year-cohort medians (log-linear trend). Industry rate: 17.0%/yr for Audi. Not a financial forecast.

Year-by-year comparison

Audi Q8 · Diesel

Year

Median price

Private est.

Avg mileage

Confidence

Potential value opportunities

ROI + NI · by value score

Audi Q8 3.0 TDI 286HP QUATTRO S LINE...

€49,950

+3% vs expected price

135k km · automatic · Dublin · 19d

S Line

See ad

2018 Audi Q8 50 TDI Quattro S Line 5dr Tiptronic Video Review •

£30,950→€61,476imported

+3% vs expected price

NI Import

NI → ROI import costs

Assumes the car is NI-registered (no customs duty or VAT under Windsor Framework). Includes VRT + NOx levy + registration + transport. Click for full breakdown.

116k km · automatic · Cullybackey · 34d

S Line

See ad

Audi Q8 3.0 TDI 286PS S line 50 Quattro Auto 5D

€53,000

+9% vs expected price

177k km · automatic · Galway City, Galway · 33d

S Line

See ad

2018 Audi Q8 50 TDI Quattro S Line 5dr Tiptronic Video Review •

£34,990→€66,243imported

+25% vs expected price

NI Import

NI → ROI import costs

Assumes the car is NI-registered (no customs duty or VAT under Windsor Framework). Includes VRT + NOx levy + registration + transport. Click for full breakdown.

96k km · automatic · Strabane · 34d

S Line

See ad

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