N47/N57 DIESEL ENGINE EGR COOLER REVISED EXT LTD WTY(ELW) COVERAGE/PROCEDURE
full bulletin at NHTSA ↗2014 BMW 328d engine problems
severe Owners of the 2014 BMW 328d have filed 50 NHTSA complaints about the engine, typically surfacing around 79,000 miles at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Failure mileage
Complaints
50
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2014 328d (this page) | 50 |
| 2015 328d | 4 |
4fires
When does it fail?
Of the 50 engine complaints filed for the 2014 BMW 328d, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Engine accounts for 33% of every owner complaint on file for this vehicle — the dominant problem area across 6 categories tracked.
Owners have filed 50 engine complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
The Exhaust Gas Recirculation (EGR) Cooler limited warranty for defects in materials and / or workmanship has been extended to 25 years without mileage limit as determined from the original first in-service / delivery date.
full bulletin at NHTSA ↗The Exhaust Gas Recirculation (EGR) Cooler limited warranty for defects in materials and / or workmanship has been extended to 25 years without mileage limit as determined from the original first in-service / delivery date.
full bulletin at NHTSA ↗The vehicle demonstrates a power loss and the malfunction indicator lamp (MIL) on. The following fault codes may be stored in the DDE: 24CE00 Hot film air mass meter: Ratio of measured to calculated air mass too high 27F000 Charge air hose monitoring in idle: Charge air hose fallen down 290900 Air system, air to EGR air mass flow plausibility: Measured air mass compared to calculated air mass too high 290A00 Air system, air to EGR air mass flow plausibility: measured air mass compared to calculated air mass too high and high charging pressure control deviation
full bulletin at NHTSA ↗Component specific limited warranty extension. For the eligible vehicles, BMW of North America, LLC (BMW NA) is extending the limited warranty for the vehicle Nitrogen Oxide (NOx) Sensor(s) to: 10 years/120,000 miles as determined by the vehicle original in-service date.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2014 328d diesel exhibits a cluster of engine defects. The most pervasive is the EGR cooler, which develops internal leaks that mix coolant with diesel soot, corroding the intake manifold from the inside. Owners report melted manifold holes, smoke, engine fire, and complete loss of power. NHTSA issued Recall 18V755000 in October 2018 and Recall 21V907000 in 2021, but both carried "Remedy Not Available" status for 18+ months, leaving owners stranded with vehicles marked unsafe and unfixable.
High-pressure fuel pump failures cause sudden in-motion stalls without warning codes. Metal shavings contaminate the entire fuel system, requiring $3,000–$10,000 in repairs. The extended warranty covers failures only to 120,000 miles; owners past that threshold are denied coverage despite a known defect.
Timing chain failures on the N47 diesel engine result in catastrophic engine seizure with zero warning. Europe issued a recall for this; the US did not. Complete engine replacement costs $16,800–$21,000+.
Fuel injectors fail and leak, corroding manifolds. Some owners faced four or five repair cycles before the underlying EGR issue was addressed. After EGR cooler recalls, particulate sensor faults have emerged, often denied under warranty despite correlation to the recall work itself.
The DEF/SCR active tank sensor regularly fails; BMW charges $2,700 for full tank replacement where competitors offer $300 repair kits. Coolant leaks occur internally without visible ground seepage, and one owner reported loss of power at 200 miles from a dealership where the vehicle was purchased with an open, undisclosed recall.
Failure modes owners describe
EGR Cooler Internal Leak / Intake Manifold Melting
EGR cooler develops internal leak allowing coolant to mix with diesel soot, creating corrosive particles that erode the intake manifold and create holes. This causes overheating, fire risk, and engine failure. Multiple owners report melted manifolds, intake manifold holes, and engine fires as a direct result.
When: Varies; some at 48K–150K miles; recall issued October 2018 but repair parts remained unavailable for over 18 months in multiple reports
Symptoms owners cite: Check engine light illuminates; Coolant leaks or burns off rapidly; Smell of diesel and antifreeze in cabin; Smoke from engine area; Engine overheating; Intake manifold melted or perforated; Reduced power / limp mode; Burning plastic smell
Codes mentioned: 18V755000, 21V907000, 29EB-00
Repairs/costs cited: Intake manifold replacement (melted), EGR cooler replacement (when parts available). Cost estimates: $2,400–$3,300 out-of-pocket in cases where recall remedy unavailable. One owner cited $26,000 engine replacement after cascading damage.
Recalls/TSBs owners mention: Recall 18V755000 (October 2018) and 21V907000 (2021) issued but marked 'Remedy Not Available' for extended periods. BMW stated no fix available; owners unable to get repairs despite recall status. Some dealers offered no assistance or told owners to wait. Extended warranty (SIB 01 05 20) offered but often not honored if vehicle registered outside original market.
High-Pressure Fuel Pump (HPFP) Failure
High-pressure fuel pump fails suddenly, often without warning codes, causing complete loss of engine power while driving. Internal pump failure releases metal shavings into the fuel system. Multiple reports of in-motion stalls at freeway speeds.
When: 15K–99K miles; one owner at 48K, another at 55K; some with no prior warning lights
Symptoms owners cite: Sudden complete loss of power / engine stall; Engine dies and will not restart (or restarts in limp mode at ~20 mph); Check engine light (may appear after restart or not at all); No warning codes or diagnostic available on scanner; Metal shavings in fuel tank; Transmission stuck in park; requires manual override to get to neutral
Codes mentioned: 15V189000
Repairs/costs cited: High-pressure fuel pump replacement; entire fuel system often requires replacement due to metal contamination (tank, lines, injectors). Cost range: $3,000–$10,000+. BMW extended warranty (10 years / 120K miles) often does not cover failures after threshold.
Recalls/TSBs owners mention: Recall 15V189000 exists but many VINs were excluded. Bosch CP4 pump recalled in other models but exemption applied to diesel variants. Extended warranty offered but limited to 10 years/120K miles; failures beyond that not covered.
Timing Chain Failure
Timing chain snaps or fails prematurely on N47 diesel engine, resulting in catastrophic engine damage and complete loss of propulsion. A known defect in European markets with recalls issued; diesel models reportedly more affected than gasoline variants. No effective warning.
When: Occurs without warning across mileage range; one report at 125K miles
Symptoms owners cite: Sudden engine stall without prior warning; Complete loss of propulsion; No warning lights before failure; Metal flakes or particles in oil; Loud noise then engine seizure
Repairs/costs cited: Complete engine replacement required. Cost: $16,800–$21,000+ for new engine and labor.
Recalls/TSBs owners mention: Class action lawsuit filed for 328i models; BMW has issued recall in Europe for diesel engines. No US recall on 2014 diesel models despite known defect. Warranty covers only up to 50K miles; owners beyond that are not covered.
Fuel Injector Failure and Manifold Melting
Fuel injectors leak and corrode the intake manifold, often triggered or exacerbated by EGR cooler leaks. Multiple injector failures occur sequentially. Melting manifold creates fire and performance loss.
When: 42K–90K miles range in reported cases
Symptoms owners cite: Strong smell of fuel and exhaust in cabin; Check engine light; Melted or corroded fuel injectors; Intake manifold warping or melting; Reduced power; Fault code 24BD00 (cylinder 3 fuel injector), 24C000 (multiple injectors)
Codes mentioned: 24BD00, 24C000
Repairs/costs cited: Fuel injector replacement (single or multiple); intake manifold replacement. One owner reported $3,300 repair after injector and manifold work. Multiple replacement cycles reported (same injector failed twice at 42K and 44K miles).
Recalls/TSBs owners mention: No specific recall. Dealers attribute to age/maintenance but problem correlates with EGR cooler defect. Owner reports fuel injectors failing repeatedly under warranty initially, then post-warranty repair costs borne by owner.
Particulate Sensor / DPF Fault After EGR Recall
Following EGR cooler recall and DDE software update, particulate sensor failures emerge. Fault code 2BB300 triggers MIL. Pattern suggests post-recall defect rather than normal wear, but warranty denied due to vehicle age despite timing indicating recall causation.
When: Shortly after EGR cooler recall completion
Symptoms owners cite: Check engine light (MIL) illumination; Particulate sensor fault code 2BB300; Fault appears only after recall service, not before
Codes mentioned: 2BB300, 2BB700–2BA200 range (per TSB MC-10160282-9999)
Repairs/costs cited: Particulate sensor replacement required. Owner denied warranty coverage despite BMW acknowledging these faults in TSB.
Recalls/TSBs owners mention: BMW emissions warranty extension bulletin (TSB MC-10160282-9999) lists particulate sensor failures as known. Warranty denied post-10 year due to vehicle age, despite temporal correlation with recall work.
DEF/SCR Active Tank Sensor Failure
Urea tank fluid level sensor fails, causing DEF system errors and MIL activation. BMW requires complete active tank replacement ($1,200 parts + $1,500 labor = $2,700+) instead of offering sensor repair kit available from other manufacturers.
When: High failure rates across BMW diesel line; one report at ~100K miles
Symptoms owners cite: Check engine light; SCR Active Tank error codes (805256, 8051B5); Urea level reading failure; Return pump volume out of range
Codes mentioned: 805256, 8051B5
Repairs/costs cited: Complete active tank replacement: $2,700 total. Volkswagen diesel equivalent uses $300 repair kit; BMW does not offer comparable option.
Recalls/TSBs owners mention: 335d and X5d models received extended warranty to 120K/10 years due to high failure rates. 328d not included in extended warranty program despite same component failure pattern.
Engine Stall and Power Loss (Undiagnosed)
Sudden, unexpected engine stalls at low or highway speeds with no identifiable fault code or warning. Vehicle restarts but issue recurs. Some cases linked to fuel pump or EGR issues; others remain undiagnosed.
When: Throughout ownership; 23K–99K miles reported
Symptoms owners cite: Engine dies suddenly without warning; Vehicle stalls in drive (sometimes shifts to park); Check engine light may or may not appear; No retrievable fault codes in some cases; Inability to restart or restart only in limp mode
Codes mentioned: Unknown in many cases
Repairs/costs cited: Diagnosis difficult; repair varies (fuel system, EGR cooler, failed catalytic converter sensors). One owner paid for fuel system replacement under warranty; issue recurred.
Recalls/TSBs owners mention: BMW covered under warranty in some cases (catalytic converter sensor replacement) but recurring stall pattern suggests systemic issue not fully addressed.
EGR Valve Stuck / Vacuum Line Sediment Buildup
EGR valve locks open due to sediment accumulation in vacuum line caused by antifreeze leaking from EGR cooler. Valve remains open, causing manifold overheating, perforation, and fire risk. Same issue identified in 2015–2017 models in Europe and South Korea but not addressed in 2014 US models.
When: Not precisely dated; detected during repairs for other symptoms
Symptoms owners cite: Antifreeze smell in cabin; Diesel smell combined with antifreeze odor; Smoke from engine; Hissing noise; Melted holes in intake manifold (one owner reported 4 holes); Burning plastic smell
Repairs/costs cited: Intake manifold replacement; EGR valve vacuum line clearing/replacement. One owner paid for manifold replacement at independent shop after dealer denied repair.
Recalls/TSBs owners mention: Recall issued for 2015–2017 models in Europe and South Korea but not extended to 2014 models in US despite owner reporting identical failure mode and dealer acknowledgment of the overseas recall.
Coolant Leak / Low Coolant Warning
Engine coolant leaks rapidly or burns off, triggering low coolant indicator. Leak often occurs in hose related to EGR cooler circuit or within EGR cooler itself. Vehicle runs hot and creates fire hazard.
When: Early in ownership or after mileage accumulation; one report at 200 miles from dealership purchase
Symptoms owners cite: Coolant low indicator illuminates; Rapid coolant loss without visible ground leak; Engine overheating; Coolant may be leaking internally into fuel system
Repairs/costs cited: Coolant leak hose replacement in some cases; EGR cooler replacement when available. One dealer repaired coolant hose but made no note of open recall or addressed root cause.
Recalls/TSBs owners mention: Coolant hose repairs performed but not linked to EGR recall despite temporal and mechanical correlation.
Turbocharger / Turbo Wastegate Failure
Turbo wastegate leaks caused by carbon and soot buildup from faulty EGR cooler. Post-EGR recall, strong fuel and exhaust odor in cabin traced to turbo wastegate leak. Dealer claims issue not covered under recall.
When: After EGR cooler recall repair
Symptoms owners cite: Strong fuel and exhaust smell in cabin post-recall; Turbo wastegate leaking; Carbon and soot buildup
Repairs/costs cited: Turbo wastegate repair/replacement. Denied under warranty or recall coverage.
Recalls/TSBs owners mention: Dealer advised smell would 'burn off' and denied coverage as not part of recall scope, despite root cause being EGR cooler defect.
Synthesized from 50 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 9 most recent
DEF tanks froze in cold weather causing multiple parts to fail in the engine. DEF system I believe is now compromised as a result of poor engineering for the overall system. Vehicle is parked outside and there were temperatures well below zero.
I was in a busy Freeway driving & Now my 2014 Bmw 328 D high pressure fuel failed which caused me to stall and be stuck in the middle of the freeway which also almost made me cause like 10 car crashes it was sorry scary but lucky police helped out and other driver where also caution
Tl* the contact owns a 2014 BMW 328d. When the vehicle was started, the drive train malfunction warning indicator illuminated. The vehicle was taken to bert ogden BMW (3201 n 10th st, mcallen, tx 78501, (956) 467-5663) on three separate occasions to be diagnosed. The mechanic was unable to retrieve a fault code. The contact was informed that the failure may be due to an EGR failure as indicated…
I have a 2014 328d f31 three weeks ago while turning into a parking spot at a grocery store parking lot at low speed, my 328d shifted to p mid turn, and the engine shut off. Upon trying to restart it, it would crank but not turn over. (thankfully, I was in a parking lot and going at slow speed - and not on the interstate). We had to manually get it shifted into neutral to be able to…
Tl* the contact owns a 2014 BMW 328d. The contact received notification of NHTSA campaign number: 18v755000 (engine and engine cooling). While driving at an unknown speed, the coolant indicator illuminated and the vehicle made strange noises. The contact called irvine BMW at 949-523-3960 (located at 9881 research dr, irvine, ca 92618) and was informed that the parts were not available for the…
2014 BMW 328. Consumer writes in regards to mechanical malfunction as a result of the EGR cooler issue. *ld the consumer stated the vehicle set fire and the parts to repair the vehicle were unavailable. *js - (recall related incident) ts
I got a CEL and dropped it off at the dealer. They said it was to the active scr tank. After research I found out a lot of BMW vehicles have the item fail. The 328d is not on the list of extended warranties. Are there many 328d's that fail?
Timing chain snapped and blew the engine, no warning at all. more than 60+ miles from home
EGR valve on 2014 328d BMW : engine light has gone on repeatedly after each engine repair. Reported engine coolant had to be refilled before first repair. First repair consisted of 2 sensors for nox and 1 filtered air pipe. Engine light on again and found hole in melted intake manifold which was replaced. Engine light reappeared again. Owner suspects EGR cooler leaking internally mixing with…
Had engine trouble with your 2014 BMW 328d?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2014 BMW 328d?
It's a meaningful issue. 50 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 26 complaints that reported odometer mileage, most engine failures cluster between 55,114 and 99,800 miles, with the median around 79,000. A quarter of owners report trouble before 55,114; a quarter make it past 99,800. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2014/BMW/328d.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.