ExhaustHigh
EGR cooler recall and DPF blockage on diesels
DPF forced regen or replacement£250–£1,600
Inspect · Confirm the recall against the VIN and run the car up to temperature
2014–2025 BMW 4 Series · common fault repair costs
What the known faults on this BMW 4 Series typically cost to put right at a UK independent garage · use the figures to price risk before you bid, and to justify a reduction when something shows up on inspection.
Cost at a glance
- Most expensive fault
- £250–£1,600
- Top three risks, from
- £650
- Worst case, everything
- £4,200
The single priciest documented job on the 2014–2025 BMW 4 Series is dpf forced regen or replacement at £250–£1,600. Few cars need every repair listed here · treat £830–£4,200 as the full exposure if one arrived with all of them.
Cost per fault
SuspensionMedium
Bush and drop link wear plus kerbed alloys
Suspension refresh (per axle)£250–£1,100
Inspect · Listen for knocks and inspect all four wheels
BodyHigh
Convertible roof mechanism and hydraulic faults
Water-ingress trace & seal£150–£800
Inspect · Cycle the roof fully twice and check for damp in the boot
ElectricalMedium
iDrive, camera and comfort access faults
Routine repair£180–£700
Inspect · Test iDrive, cameras and keyless entry
Ranges are indicative parts-and-labour costs at a UK independent garage, inclusive of VAT. Franchised dealers typically sit 40–80% higher, and prestige or electrified variants sit at the top of each band. Always get a written quote before committing.
Inspecting a BMW 4 Series this week?
Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.