BMW's third-generation 1 Series moved to the front-wheel-drive FAAR platform, sharing its architecture with the 2 Series Gran Coupe F44 and X1 F48. The 118d uses the B47 2.0-liter turbodiesel, a proven and efficient four-cylinder that replaced the problematic N47 in 2014. With 150 PS and strong mid-range torque, it suits higher-mileage commuters well. The F40 was replaced by the F70 generation in late 2024.· more· less
Proven B47 diesel, strong economyMajor improvement over N47 era
Emissions system complexityAisin gearbox less refined than ZF
Buy if: You want an efficient diesel premium hatchback for longer commutes and can verify complete service history and the VIN-limited driver airbag recall status.
Avoid if: You mainly drive short city trips (DPF, EGR, and AdBlue will cause problems) or want the rear-drive character of the older F20 1 Series.
Price & maintenance
Used price
€20,000
median asking price, typically 85,000 km
Typical range€17,800 – €22,900
Kilometres drivenAll
Maintenance cost
€800 – €1,450/year
at 15,000 km/year
Fixed costsservice, tyres, brakes€500 – €850 /yr
Risk bufferunplanned repairs€300 – €600 /yr
Price estimates are based on German asking prices. Prices and costs vary by vehicle condition and location.
Ownership costs
Maintenance assumes 15,000 km a year. Price estimates are based on German asking prices. Prices and costs vary by vehicle condition and location.
Used price
€20,000
Typically €17,800 – €22,900, at around 85,000 km.
Kilometres driven
Maintenance
€800 – €1,450per year
€500 – €850
service, tyres, brakes
€300 – €600
repair buffer
Price & maintenance
Used price
€24,000
median asking price, typically 85,000 km
Typical range€21,500 – €27,000
Kilometres drivenAll
Maintenance cost
€800 – €1,450/year
at 15,000 km/year
Fixed costsservice, tyres, brakes€500 – €850 /yr
Risk bufferunplanned repairs€300 – €600 /yr
Price estimates are based on French asking prices. Prices and costs vary by vehicle condition and location.
Ownership costs
Maintenance assumes 15,000 km a year. Price estimates are based on French asking prices. Prices and costs vary by vehicle condition and location.
EGR valve clogs with carbon; the cooler can leak internally, a defect class BMW recalled on earlier B47 and N47 production · more· less
The B47 engine's EGR valve accumulates carbon deposits over time, particularly with city driving and short trips. Symptoms include rough idling, reduced power, and engine warning lights. BMW’s large EGR cooler recall, roughly 800,000 diesel vehicles worldwide for coolant leaking internally, melting intake manifolds and in rare cases fire, covers production from August 2010 to August 2017 and therefore does not reach the F40. Carbon fouling of the valve itself is still an ordinary wear item on this engine. The EGR valve itself costs around €160 and can be replaced in about 2 hours (€400-600 total at an independent shop). If the cooler also needs replacement and the intake manifold is damaged, costs reach €1,200-1,500. There is no EGR cooler recall to verify on an F40; check instead for a documented EGR service history and any open service action against the VIN.
DPF clogging from short-trip driving
up to €2,0002 of 7
Diesel particulate filter clogs when regeneration cycles cannot complete due to short trips · more· less
The DPF requires sustained highway driving (15-20 minutes at 80+ km/h) to reach the temperatures needed for automatic regeneration. Cars driven mostly in city traffic accumulate soot faster than it can be burned off. A clogged DPF first triggers a warning light and eventually causes limp mode. A forced regeneration at a workshop costs €150-300. Professional DPF cleaning costs €300-500, while full replacement runs €1,500-2,000. The DPF typically lasts 150,000-200,000 km on highway-driven cars, but can clog much earlier on short-trip vehicles. A faulty thermostat preventing the engine from reaching operating temperature can also block regeneration.
AdBlue system malfunction (NOx sensor or pump)
up to €1,8003 of 7
SCR system components degrade, causing warning messages and eventual start prevention · more· less
The 118d F40 uses an AdBlue injection system to meet Euro 6d emissions standards. The NOx sensors (upstream and downstream) can fail or give false readings, and the AdBlue injection pump or dosing module can malfunction. Symptoms begin with dashboard warnings that progress to a countdown (for example, no restart in 1,500 km) that eventually prevents the engine from starting. Using poor-quality AdBlue or letting the tank run completely dry can damage components. A single NOx sensor replacement costs €400-600 including labor. If the pump and multiple sensors need replacement, costs reach €1,500-1,800. Roughly 5-10% of B47 diesel owners report some form of AdBlue system issue within 100,000 km.
Aisin 8-speed automatic gearbox jerking
up to €2,5004 of 7
Low-speed jerky shifts and hesitation, particularly in stop-and-go traffic · more· less
The optional Aisin 8-speed automatic in the European F40 118d is the GA8G45AW, with a six-speed manual as standard; the gearbox is notably less refined than the ZF 8HP found in rear-drive BMWs. Owners report jerky behaviour at low speeds, particularly when crawling in traffic or navigating roundabouts. The gearbox can lurch when shifting between 1st and 2nd gear and may feel rough engaging reverse from cold. A transmission fluid change (recommended every 60,000-80,000 km despite BMW labelling it a lifetime fill) costs €250-400 and resolves mild symptoms. In rare cases of worn valve body or clutch packs, repair costs reach €1,500-2,500. Oil pump neck wear is documented for the GA8F22AW used elsewhere in the range, not for the GA8G45AW fitted here, so do not assume it carries over. Manual gearbox models are not affected by this issue.
Turbo actuator sticking
up to €1,5005 of 7
Variable-geometry vanes stick from carbon buildup, causing limp mode and power loss · more· less
The B47's variable-geometry turbocharger uses vanes controlled by an electronic actuator. Carbon deposits can cause the vanes to stick, particularly on cars driven gently or only for short trips. Symptoms include sudden power loss, no boost below 3,000 rpm, engine warning light, and limp mode. Independent specialists can rebuild the actuator for €300-500. If the full turbo assembly needs replacement, expect €1,200-1,500. Approximately 10-15% of B47 owners report some form of turbo-related issue over the engine's lifetime. Regular spirited driving and occasional highway runs help prevent carbon buildup on the vane mechanism.
Oil filter housing gasket leak
up to €7006 of 7
Rubber gasket hardens and shrinks from heat cycling, causing oil seepage · more· less
A common BMW issue across multiple engine families including the B47. The oil filter housing gasket is made of rubber that deteriorates over time due to heat cycling. Oil seeps from the gasket area, often dripping onto other components. The gasket itself costs under €20, but labour takes 2-3 hours due to engine bay packaging. Total repair cost is €300-500 at an independent shop or €500-700 at a BMW dealer. Typically occurs between 60,000-120,000 km.
Cooling system failure (water pump / thermostat)
up to €1,2007 of 7
Coolant pump or electronic thermostat fails, typically between 80,000 and 120,000 km · more· less
The B47 drives its main coolant pump mechanically and pairs it with an electronic thermostat housing; both are known wear items on modern BMW engines, and the separate electric auxiliary pumps are a different circuit. Symptoms include coolant warning lights, erratic temperature gauge readings, or poor cabin heating. A single overheating event can warp the aluminium cylinder head, so prompt attention is critical. BMW typically recommends replacing both the pump and thermostat together. Parts cost €250-400, with labor adding €250-800 depending on the shop. At 5 years old, most F40 118d models have not yet reached the typical failure mileage, but cars approaching 100,000 km should have the cooling system inspected.
Reliable diesel engine, but emissions systems add complexity
The B47 engine in the 118d F40 is fundamentally sound and a major improvement over the older N47 timing chain era. Most risks relate to diesel emissions equipment (EGR, DPF, AdBlue) rather than core engine reliability. Cars driven regularly on longer motorway trips will have far fewer problems than those confined to city traffic. The EGR cooler recall people associate with BMW diesels covers 2010 to 2017 production and does not apply here, so budget for ordinary emissions system maintenance as the car ages past 80,000 km rather than counting on a campaign. Many B47 engines exceed 200,000 km without major internal issues when properly maintained.
Service history
Complete BMW dealer or specialist records essential. Verify oil changes happened at reasonable intervals (not just the CBS maximum of 30,000 km).
Tires
Check tread depth, age (date codes), and uneven wear patterns. Run-flat tires (if fitted) wear faster and cost more to replace.
Cold start
Start the engine cold. Listen for unusual rattling, knocking, or excessive diesel clatter that does not settle within a few seconds.
Test drive
Drive for at least 20 minutes including urban and highway sections to check gearbox behaviour and allow DPF regeneration opportunity.
Specific for this vehicle
Verify open recall and service action status
Contact BMW with the VIN to confirm the driver airbag recall and any open service action. The wider BMW EGR cooler campaign covers 2010-2017 production and does not apply to the F40.
Check for AdBlue warnings on startup
Turn on the ignition and watch for any AdBlue-related warning messages or countdown timers. Check the AdBlue level and look for crystallisation around the filler cap.
Test gearbox in slow traffic conditions
Drive at crawling speeds through roundabouts and stop-and-go traffic. Feel for jerky shifts, hesitation between gears, or clunking when engaging reverse.
+ 3 more checksShow less
Check DPF soot level with diagnostics
Use BMW diagnostics (ISTA or Carly) to check DPF soot loading and ash content. High ash levels indicate the filter is approaching end of life.
Check for oil leaks around filter housing
Inspect the oil filter housing area for signs of seepage or fresh oil residue. A very clean engine bay on a high-mileage car may indicate recent cleaning to mask leaks.
Check coolant level and condition
Low coolant could indicate EGR cooler leak. Look for discolouration or oily residue in the expansion tank.
Recalls and Technical Service Bulletins
Driver airbag recall 0032100300 for VIN-limited F40 / F1H vehicles produced 25 January to 12 March 2020Verify completed
Only one European campaign is established for the F40: driver airbag recall 0032100300 for a VIN-limited batch produced in early 2020. The EGR cooler campaign that circulates for BMW diesels covers production from August 2010 to August 2017 and therefore does not reach the F40; the rear buckle, sunroof and audio-warning actions belong to other model series and to the US market. Contact a BMW dealer with the VIN to confirm.
Warranty Status
Factory warranty (3 years, BMW 2+1 program)Expired on 2019-2022 models; may remain on late 2023 cars
Rust perforation warranty (12 years)Active on all F40 models
Extended warranty (BMW Extended Warranty)Available through BMW dealers, 1-2 year extensions
BMW extended its EU warranty to 3 years (2+1 program) from November 2016 onward, so all F40 models benefit from 3-year coverage with no km limit. Most used 118d F40 models from 2019-2022 will be outside their factory warranty. If considering a 2023 car, check remaining coverage with BMW using the VIN.
Sources: Research draws on model-specific owner forums and owner communities, recall information from official authorities, German automotive press, and multiple workshop cost references cross-checked against each other.
This report is for informational purposes only and does not constitute professional advice. Estimates may be inaccurate. Always have a qualified specialist inspect the vehicle before purchase. We accept no liability for decisions made based on this information.
