BMW F32 Buyer Guide: 4 Series (2013-2020)
The F32 is the first-generation BMW 4 Series Coupe, sold in the UK from 2013 to 2020. BMW separated the 3 Series Coupe out into its own 4 Series identity for this generation, giving it widened arches, lowered stance, and its own model name. Mechanically twin to the F30 saloon: same engines, same trims, same chassis-level wear patterns. Coupe-specific items: rear (small) window regulators, wastegate rattle on 435i and 440i. This guide tells you what to check and which engine to pick.
Quick verdict
The F32 is the modern executive-coupe value buy. Post-LCI cars (mid-2017 onwards) get the better B47, B48 and B58 engines, ULEZ-compliant diesels, and Apple CarPlay retrofittable. The 440i (B58) is the M Performance pick and an honest fast UK car at £22,000 to £34,000 in 2026. The 430d xDrive (B57) is the long-distance pick. M4 is a separate chassis with its own conversation. Same F30 buying logic applies, with around £200 to £500 coupe premium over an equivalent F30.
What is the BMW F32?
Most F32s in UK classifieds are 2017 to 2019 LCI 420d M Sport and 440i M Sport Coupes. The 420d is the everyday buyer; the 440i is the enthusiast pick. The 435d xDrive (LCI B57) is the rare-but-rewarding long-distance pick. M4 (F82) is a separate buying conversation: S55 twin-turbo, rod-bearing service, charge pipe upgrade standard.
BMW's first 4 Series, splitting the 3 Series Coupe off into its own brand identity in 2013. Mechanically twin to the F30 saloon, visually distinct with widened arches and lowered stance. M Performance pick is the 440i (B58 LCI). M4 (F82) is a separate chassis with its own conversation.
| Series | 4 Series |
|---|---|
| Body style | Coupe |
| Generation | 1 |
| UK production years | 2013 to 2020 |
| Predecessor | E92 |
| Successor | G22 |
| LCI (facelift) year | 2017 |
| Related chassis | F33 (4 Series Convertible (folding hardtop)), F36 (4 Series Gran Coupe (5-door fastback)), F82 (M4 Coupe (S55 separate chassis)), F83 (M4 Convertible (S55 separate chassis)) |
| Length / Width / Wheelbase | 4638 / 1825 / 2810 mm |
Pre-LCI vs LCI: what changed
BMW launched the F32 in October 2013 as the successor to the E92 3 Series Coupe (renamed as 4 Series). LCI happened in July 2017, tracking the F30 saloon's LCI from 2015 with a two-year delay. Engine transitions matched F30: N47 to B47 for 420d, N20 to B48 for 420i / 430i, N55 to B58 for 435i to 440i, plus the introduction of Apple CarPlay. Cars first registered after roughly August 2017 are the LCI cars.
Engines and which to choose
440i (B58, LCI) for performance value. 430i (B48) for petrol balance. 420d (B47, LCI) for cost-of-running. 430d xDrive (B57) for long-distance comfort. Avoid pre-LCI N47 / N57 diesels without timing-chain history.
| Badge | Engine | Years | Power | Fuel | ULEZ | Notes |
|---|---|---|---|---|---|---|
| 418d | B47 |
2015-2020 | 150 bhp | diesel | Yes | Entry diesel; ULEZ-compliant LCI; rare in coupe |
| 420d | N47 |
2013-2015 | 184 bhp | diesel | No | Pre-LCI N47; timing-chain risk; not ULEZ-compliant |
| 420d | B47 |
2015-2020 | 190 bhp | diesel | Yes | LCI ULEZ-compliant; the modal F32 diesel |
| 425d | B47 |
2016-2020 | 224 bhp | diesel | Yes | Bi-turbo LCI; rare |
| 430d | N57 |
2013-2015 | 258 bhp | diesel | No | Pre-LCI N57 inline-six diesel; not ULEZ |
| 430d | B57 |
2015-2020 | 258 bhp | diesel | Yes | LCI B57; ULEZ-compliant; long-distance pick |
| 435d xDrive | N57 |
2013-2015 | 313 bhp | diesel | No | Bi-turbo pre-LCI; rare |
| 435d xDrive | B57 |
2015-2020 | 313 bhp | diesel | Yes | Bi-turbo LCI; top diesel |
| 420i | N20 |
2013-2015 | 184 bhp | petrol | Yes | Pre-LCI N20; timing-chain risk |
| 420i | B48 |
2015-2020 | 184 bhp | petrol | Yes | LCI B48 |
| 428i | N20 |
2013-2015 | 245 bhp | petrol | Yes | Pre-LCI; replaced by 430i in LCI |
| 430i | B48 |
2015-2020 | 252 bhp | petrol | Yes | LCI replacement for 428i |
| 435i | N55 |
2013-2015 | 306 bhp | petrol | Yes | Pre-LCI N55 single-turbo six |
| 440i | B58 |
2015-2020 | 326 bhp | petrol | Yes | LCI replacement for 435i; B58 inline-six; the M Performance value pick |
Engine codes link to the dedicated reliability guide where one exists. Codes without a guide link to the chassis × engine reference until the engine page is published.
ULEZ status by year and engine
All F32 petrols (B38, N20, B48, N55, B58) are Euro 6 from launch and ULEZ-compliant. F32 diesels split by LCI: pre-LCI N47 / N57 are Euro 5 (NOT compliant), post-LCI B47 / B57 are Euro 6 (compliant). Transition around mid-2015 production. Verify the V5 emissions class.
Common F32-specific problems
Chassis-level failure modes only: body, electrics, infotainment, suspension, ancillaries. Engine-specific faults (timing chain, EGR, DPF) live on the engine guides linked above.
| Failure mode | Severity | Frequency | Typical onset | UK repair range |
|---|---|---|---|---|
| Electric water pump failure | Moderate | Very common | 60 to 100k mi | £500 to £700 |
| FRM3 (Footwell Module) failure | Serious | Common | 40 to 100k mi | £150 to £600 |
| Rear lower control arm bushes | Moderate | Common | 70 to 120k mi | £300 to £500 |
| Wastegate actuator rattle (435i / 440i) | Mild | Common | 40 to 100k mi | £200 to £800 |
| Rear (small) electric window regulator failure | Mild | Common | 50 to 120k mi | £140 to £320 |
| Boot release button corrosion | Mild | Very common | 50 to 100k mi | £40 to £120 |
Electric water pump failure
- Coolant warning light
- Heater blowing cold at temperature
- Engine overheating in traffic
What to do about it: Replace pump and thermostat together at 80-100k miles. 2 hours specialist labour.
If ignored: Head gasket damage, £1,500+ repair.
UK repair exposure: £500 to £700.
Additional notes: Universal F-chassis issue. Same as F30.
FRM3 (Footwell Module) failure
- Indicators flashing erratically
- Lights randomly on or off
- Central locking unreliable
What to do about it: Re-flash FRM3 at indie. Replacement coded module £400-£600 if hardware-failed.
If ignored: Car un-driveable at night; MOT failure on lighting.
UK repair exposure: £150 to £600.
Additional notes: Pre-2017 builds highest risk.
Rear lower control arm bushes
- Knocking from the rear over potholes
- MOT advisory
- Uneven rear tyre wear
What to do about it: Replace both sides with four-wheel alignment.
If ignored: Rear geometry drifts, MOT failure.
UK repair exposure: £300 to £500.
Additional notes: F-chassis universal. Lighter coupe wears less than saloon under load.
Wastegate actuator rattle (435i / 440i)
- Metallic rattle on cold start
- Rattle on light throttle at low rpm
What to do about it: Replace actuator if rattle becomes constant. £200-£800.
If ignored: Eventually actuator fails closed (boost dropout) or open (overboost); CEL.
UK repair exposure: £200 to £800.
Recall / TSB: BMW issued technical bulletins on N55 and pre-2020 B58 wastegate noise.
Additional notes: Same pattern as B58 in G20. Most-discussed 440i quirk.
Rear (small) electric window regulator failure
- Rear window won't operate
- Audible buzzing from door card
What to do about it: Replace regulator; £140-£280 fitted at indie.
If ignored: Window inoperable; security risk.
UK repair exposure: £140 to £320.
Additional notes: Coupe rear-window small frame stresses cable regulator. Same as F22.
Boot release button corrosion
- Boot button fails
- Visible corrosion
What to do about it: Replacement micro-switch £40 part, 15-minute fit.
If ignored: Cosmetic only.
UK repair exposure: £40 to £120.
Additional notes: Universal F-chassis issue.
MOT advisory patterns
Typical MOT advisories aggregated across UK F30 records. Not all will be present on any given car, but at 80,000+ miles you should expect at least two from this list:
- Rear lower control arm bushes (less common than F30 saloon)
- Brake disc wear (enthusiast owners; faster on 435i / 440i)
- Anti-roll bar drop links worn
- Run-flat tyre sidewall damage from kerbing
- Headlight beam alignment
UK trim levels
The UK trim ladder for the F32, in roughly ascending order of equipment and used premium.
| Trim | Description |
|---|---|
| SE | Base trim. Less common in coupe. |
| Sport | Sport seats, sport steering wheel. |
| Luxury | Chrome and wood trim, premium leather; less aggressive than M Sport. |
| M Sport | Most common UK trim. M body kit, lowered sport suspension, M wheels. |
| M Sport Shadow Edition | Late LCI (2018+); gloss black trim, upgraded materials. |
Options worth chasing
The factory options below add measurable used premium or change the ownership experience meaningfully.
| Option | Why it matters |
|---|---|
| Adaptive M Sport suspension (VDC) | Worth £500 to £800 used premium. Transforms ride on UK roads. |
| M Sport Differential (LSD) | Standard on 440i; option on others. Drive engagement upgrade. |
| Harman Kardon hi-fi | Audible upgrade. £400 to £600 used premium. |
| Head-Up Display | Popular on 440i. £400 to £600 premium. |
| LED headlights with adaptive cornering | Standard on later M Sport. |
| Apple CarPlay | LCI 2017 onwards; pre-LCI cannot retrofit. |
| Electric memory front seats | Worth £300 used premium. |
| Manual or eight-speed auto | Manual 440i is rare; ZF 8HP auto is the everyday-driver. |
| Sunroof | Less common on coupe than saloon. |
| Heated front seats | Standard on M Sport from facelift. |
UK market pricing (2026)
| Example car | Indicative price | Notes |
|---|---|---|
| 2014 420d M Sport, 80,000 miles | £8,000 to £11,500 | Pre-LCI N47, not ULEZ-compliant. |
| 2017 LCI 420d M Sport, 60,000 miles | £12,000 to £15,500 | B47 ULEZ-compliant; verify EGR recall. |
| 2018 430d M Sport xDrive, 50,000 miles | £16,000 to £21,000 | B57 inline-six diesel; ULEZ-compliant. |
| 2018 LCI 440i M Sport, 45,000 miles | £22,000 to £28,000 | B58 inline-six. The cheap-fast pick. |
| 2020 440i M Sport, 25,000 miles | £28,000 to £34,000 | Final F32; appreciating slightly. |
| 2016 428i M Sport, 60,000 miles | £11,000 to £14,500 | N20 petrol; pre-LCI. |
| 2018 F82 M4, 35,000 miles | £32,000 to £42,000 | Separate chassis; S55 425 bhp; verify rod-bearing service. |
| 2020 F82 M4 Competition, 25,000 miles | £48,000 to £58,000 | S55 444 bhp; final F82 M car. |
Price ranges are indicative UK figures for 2026 based on common AutoTrader listings. Real prices vary by region, history, and condition. View live AutoTrader listings for this chassis →
Pre-purchase checklist (F32-specific)
Add these F32-specific checks on top of our generic UK used-BMW inspection checklist:
- On 435i or 440i: listen for wastegate rattle on cold start. Cosmetic on its own; worsening rattle warrants £200 to £800 actuator work.
- On any N47 / N57 diesel (pre-LCI): listen for cold-start rattle. Walk away from rattle without chain receipts.
- Test rear windows. Slow movement or buzzing = £140 to £320 regulator job.
- Same F30 checks otherwise: water pump, FRM3, EGR recall on diesels, rear bushes, boot button.
- Confirm Apple CarPlay activation on LCI cars; sometimes lapsed and needs paid reactivation at indie.
- On manual 440i: confirm clutch wear and gearbox is engaging cleanly.
Buy, negotiate, or walk away
Buy
Post-July-2017 LCI build (B47 / B48 / B58 / B57), M Sport or M Sport Shadow Edition trim, full BMW service history, electric water pump and rear bushes done within recent history, FRM3 healthy, EGR recall completed on diesels, no significant wastegate rattle.
Negotiate
Pre-LCI N47 / N57 diesel without chain receipts. Loud wastegate rattle on 435i / 440i (£200 to £800). Outstanding rear window regulator. EGR recall outstanding. Boot button corrosion.
Walk away
Cold-start chain rattle on N47 / N57. M4 (F82) with no rod-bearing or charge-pipe service. Modified 440i without documentation. Salvage or write-off on HPI.
Long-term ownership verdict
Properly maintained, an F32 will run to 200,000+ miles regardless of engine. The chassis is well-resolved and shares its platform with the F30 saloon. Coupe-specific failure modes are cheap to address. The 440i (B58) is currently one of the best value modern BMW coupes available used. Buy on the service file.
Related chassis
The F32 shares its platform with related body styles and performance variants. Each is a different car with different fault patterns and a different used market.
Bimmer.AI is designed to help you identify BMW-specific buyer risks before you travel, negotiate, or pay for an inspection. It does not replace a physical inspection by a qualified mechanic, a legal vehicle-history check (e.g. HPI Check), or independent verification of finance, stolen, or write-off status. Repair-cost ranges are indicative UK figures that vary by region, specialist, parts supply, and labour rates.
Check a specific F32 listing
Paste any BMW F32 listing, VIN, or registration. Bimmer.AI returns a F32-specific buyer report in 30 seconds.
Run a Bimmer.AI buyer report →Frequently asked questions
Is the BMW F32 reliable?
Yes, the same as F30 saloon. F32-specific concerns are rear (small) window regulators and wastegate rattle on 435i / 440i. Otherwise: identical buying logic to F30.
What's the difference between F32 and F82?
F32 is the standard 4 Series Coupe (418d to 440i). F82 is the M4 Coupe (M4, M4 Competition, M4 CS, M4 GTS), which has its own chassis code with S55 twin-turbo six (instead of F32's N55 / B58), wider arches, M-specific suspension and differentials. F82 M4 is a separate ownership conversation.
Is the F32 420d ULEZ-compliant?
Depends on build date. Pre-LCI N47 is Euro 5 (not compliant). Post-LCI B47 is Euro 6 (compliant). Verify on V5.
How much should I pay for a 2018 F32 440i M Sport?
In 2026, expect £22,000 to £28,000 with 45,000 miles, full BMW service history. The 440i holds value because of the B58 engine reputation. Manual transmission examples command around £1,500 to £2,500 premium over auto.
What's the difference between F32, F33 and F36?
Same generation, three body styles. F32 is the Coupe (2-door), F33 is the Convertible (folding hardtop), F36 is the Gran Coupe (4-door fastback). They share engines and trims; F33 has the additional folding-roof failure modes.
Should I buy a 435i or a 440i?
Same answer as F22 M235i vs M240i: 440i (B58 LCI) for everyday value, 435i (N55 pre-LCI) for slightly more raw character at lower money. The 440i is the safer used buy due to B58 reliability story.
What about the F82 M4?
S55 twin-turbo, 425 to 460 bhp depending on variant (M4, Competition, CS, GTS). Owner-known concerns: valve cover gasket leaks, charge pipe upgrades, rod bearings on tracked cars. Used prices in 2026: £32,000 to £80,000 depending on variant. M4 CS and GTS examples are appreciating.
How long will an F32 last?
200,000+ miles is realistic with documented servicing. No structural concerns; coupe-specific items are cheap.
Is the F32 worth more than an F30 saloon?
Slight coupe premium (£200 to £500 over equivalent saloon) plus a slightly more aggressive visual identity. Same engines and chassis. Choose based on body-style preference; mechanical decisions are identical.