Analysing market data
Fetching listings · computing fair value · building charts
Analysing market data
Fetching listings · computing fair value · building charts
Market Intelligence
Diesel
38 days avg on market · Low data confidence
No NI listings currently available
There are 14 NI listings for this model. Switch to "All" or "NI" source filter above to see pricing data.
Updated 4d ago · NI · Low confidence
Expected price
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Est. trade-in
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Avg mileage
128k km
typical 120k km
Days listed
38d
avg on market · demand 49/100
Price drops
7.4%
5 of 68 ads, avg €1,110 reduction
AI-generated analysis · Carintel.ie · verify independently before purchasing
2018 BMW 3 Series · Diesel · per year
Estimated annual cost
€5,711/yr
Per month
€476/mo
Depreciation
€2,919
51% of total
Fuel / electricity
€1,742
31% of total
Maintenance
€850
15% of total
Road tax
€200
4% of total
Assumptions: Depreciation based on €21,950 current market median at 13.3%/yr (regression from 81 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.
16,000 km/yr · Ireland rates
BMW 3 Series 2018, all powertrain variants
Market-level estimateAll available fuel types sorted cheapest to run · WLTP figures where available · current market highlighted
45% electric (18.0 kWh) + 55% petrol (6.5 L/100 km)
median €18,311
5.0 L/100 km, diesel
median €21,744
6.5 L/100 km, petrol
median €21,133
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).
AI estimate · Irish independent garage rates
€850
estimated per year
2018 BMW 3 Series diesel requires strict adherence to official service intervals (15,000 km/12 months) to avoid sludge and turbo damage; DPF issues and AdBlue system faults add unpredictable repair costs; independent specialists are 30–40% cheaper than main dealers but ensure diesel expertise is available.
AI-generated estimate · costs vary by usage and service history · not a financial forecast
22 year-cohort data points
This BMW 3 Series is holding its value 2.7% better than the industry average, suggesting strong demand.
Market rate from 22 year-cohort medians (log-linear trend). Industry rate: 16.0%/yr for BMW. Not a financial forecast.
BMW 3 Series · Diesel
NI · by value score
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