BMW F31 Buyer Guide: 3 Series (2012-2019)
The F31 is the Touring (estate) variant of the F30 sixth-generation BMW 3 Series, sold in the UK from 2012 to 2019. Same engines as the F30 saloon, same trims, same chassis-level concerns, plus Touring-specific items: standard rear self-levelling air suspension (worth knowing about), commonly fitted panoramic glass roof (drainage maintenance is critical), and on M Sport spec an electric tailgate. This guide tells you what's the same as F30 and what's different.
Quick verdict
The F31 is the family-friendly version of the F30 and carries the same buying logic plus a few Touring-specific items. Post-LCI cars (mid-2015 onwards) get the better B47, B48 and B58 engines, ULEZ-compliant diesels, and a slightly more practical electric tailgate package. The new failure mode you don't see on the F30 saloon is the standard rear air suspension (£400 to £800 per side past 80,000 miles), plus panoramic roof drainage if fitted. Otherwise: same F30 buying advice applies, with around £200 to £500 Touring premium over an equivalent saloon.
What is the BMW F31?
Most F31s in UK classifieds are 2014 to 2018 320d M Sport Touring diesels with the optional electric tailgate and panoramic glass roof. That's the modal car: ex-fleet or ex-family-PCP, 70,000 to 120,000 miles, M Sport spec. The engine and LCI cutoff matter exactly as on F30. The Touring-specific decisions are around the panoramic roof (drainage care) and the electric tailgate (motor service item). The 330d Touring xDrive is the family-distance pick. The 340i Touring (LCI B58) is very rare and a genuine sleeper-fast estate.
The family-friendly hauler of the F-generation 3 Series. UK buyers favour the 320d Touring with self-levelling rear air suspension as the school-run-and-tip-run default. Ex-fleet presence is heavy. Cargo capacity 495L seats up, 1,500L seats folded, with the optional panoramic glass roof on most M Sport examples.
| Series | 3 Series |
|---|---|
| Body style | Touring (estate) |
| Generation | 6 |
| UK production years | 2012 to 2019 |
| Predecessor | E91 |
| Successor | G21 |
| LCI (facelift) year | 2015 |
| Related chassis | F30 (Saloon (the saloon sister)), F34 (3 Series Gran Turismo), F80 (M3 saloon (S55, separate chassis; no M3 Touring in F-gen)) |
| Length / Width / Wheelbase | 4633 / 1811 / 2810 mm |
Pre-LCI vs LCI: what changed
BMW launched the F31 in September 2012 as the Touring companion to the F30 saloon. LCI happened in July 2015, tracking the F30 saloon. Same engine transitions: N47 to B47 for 320d, N20 to B48 for 320i / 330i, N55 to B58 for 335i to 340i. iDrive upgrade, LED headlight option, refreshed bumpers, Apple CarPlay retrofittable on LCI. Cars first registered after roughly March 2015 are the LCI cars and the safer bet for daily London use.
Engines and which to choose
For most UK Touring buyers, the 320d (B47, post-LCI) is the right F31. The 330d (B57, post-LCI) is the long-distance family pick (xDrive especially). The 320i / 330i (B48) are the simpler petrol picks if your annual mileage is under 12,000 or you live inside ULEZ. The 340i (B58) is very rare as Touring but worth chasing if you find one with good history. Avoid pre-LCI N47 diesels without timing-chain history; that's the same F30 advice.
| Badge | Engine | Years | Power | Fuel | ULEZ | Notes |
|---|---|---|---|---|---|---|
| 316d | N47 |
2012-2015 | 116 bhp | diesel | No | Entry diesel; rare in Touring; pre-LCI |
| 316d | B47 |
2015-2019 | 116 bhp | diesel | Yes | ULEZ-compliant LCI; rare |
| 318d | N47 |
2012-2015 | 143 bhp | diesel | No | |
| 318d | B47 |
2015-2019 | 150 bhp | diesel | Yes | |
| 320d | N47 |
2012-2015 | 184 bhp | diesel | No | Most common F31 diesel; pre-LCI; timing-chain risk |
| 320d | B47 |
2015-2019 | 190 bhp | diesel | Yes | Most common F31 diesel; LCI; ULEZ-compliant; verify EGR recall |
| 320d EfficientDynamics | N47 |
2012-2015 | 163 bhp | diesel | No | Lower-rated for economy; pre-LCI |
| 320d ED Plus | B47 |
2015-2019 | 163 bhp | diesel | Yes | Updated EfficientDynamics; ULEZ-compliant |
| 325d | B47 |
2016-2019 | 224 bhp | diesel | Yes | Bi-turbo LCI; rare in F31 |
| 330d | N57 |
2012-2015 | 258 bhp | diesel | No | Pre-LCI 330d Touring is the F31 family-distance pick; not ULEZ-compliant |
| 330d | B57 |
2015-2019 | 258 bhp | diesel | Yes | LCI 330d Touring; ULEZ-compliant; the family distance pick |
| 335d xDrive | N57 |
2013-2015 | 313 bhp | diesel | No | Bi-turbo pre-LCI; rare in Touring |
| 335d xDrive | B57 |
2015-2019 | 313 bhp | diesel | Yes | Bi-turbo LCI Touring; the top F31 diesel |
| 320i | N20 |
2012-2015 | 184 bhp | petrol | Yes | N20 turbo petrol; timing-chain risk pre-2017 builds |
| 320i | B48 |
2015-2019 | 184 bhp | petrol | Yes | LCI replacement for N20 |
| 328i | N20 |
2012-2015 | 245 bhp | petrol | Yes | Pre-LCI; replaced by 330i in LCI |
| 330i | B48 |
2015-2019 | 252 bhp | petrol | Yes | LCI replacement for 328i |
| 335i | N55 |
2012-2015 | 306 bhp | petrol | Yes | Pre-LCI; rare in Touring |
| 340i | B58 |
2015-2019 | 326 bhp | petrol | Yes | LCI inline-six petrol; very rare as Touring |
| 330e | B48 |
2017-2019 | 252 bhp | plug-in hybrid | Yes | Touring PHEV variant; rare in UK |
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
Identical to F30 saloon. All F31 petrols are Euro 6 from launch and ULEZ-compliant. F31 diesels are split by LCI: pre-LCI N47 is Euro 5 (NOT compliant), post-LCI B47 is Euro 6 (compliant). Transition around August 2014 production, registered late 2014 onwards. Verify the V5 emissions class.
Common F31-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 |
|---|---|---|---|---|
| Rear self-levelling air suspension bag failure | Moderate | Common | 80 to 130k mi | £400 to £800 |
| Electric tailgate motor or sensor failure | Mild | Common | 60 to 130k mi | £40 to £500 |
| Electric water pump and thermostat failure | Moderate | Very common | 60 to 100k mi | £500 to £700 |
| Panoramic glass roof drainage blockage | Moderate | Common | 40 to 130k mi | £50 to £200 |
| Rear lower control arm bushes | Moderate | Very common | 70 to 110k mi | £300 to £500 |
| FRM3 (Footwell Module) failure | Serious | Common | 40 to 100k mi | £150 to £600 |
| Boot release button corrosion | Mild | Very common | 50 to 100k mi | £40 to £120 |
Rear self-levelling air suspension bag failure
- Car sitting noticeably lower at the rear in the morning
- Suspension warning light or message
- Compressor running for extended periods on cold starts
- Bouncy or noisy rear ride
- Visible age cracking on the rubber air bag at MOT inspection
What to do about it: Replace failed air bag promptly. Most indie BMW specialists do this in around 3 hours per side. OEM bags are around £200 to £350 per side in parts. Replace both sides together if one has failed past 100k.
If ignored: Worsens until the car cannot self-level; eventual MOT failure. Drivable but increasingly uncomfortable, especially loaded. Long-tail damage to compressor.
UK repair exposure: £400 to £800.
Additional notes: Rear air suspension is STANDARD on F31 Touring (unlike F10 saloon where it's optional). This means every F31 has this failure mode. Plan for it past 80,000 miles.
Electric tailgate motor or sensor failure
- Tailgate stops mid-cycle and won't open or close
- Auto-open fails on key-fob press
- Buzzing noise from inside the tailgate when operated
- Tailgate falls or drifts under its own weight
What to do about it: Replacement gas struts (£40 to £80 each) when tailgate begins to fall. Replacement motor unit (£250 to £450 fitted at indie) when the motor itself fails. Sometimes a control-module recode resolves sensor faults.
If ignored: Tailgate becomes manual; cosmetic from a buying perspective. Long-tail can damage struts or rear wiring loom.
UK repair exposure: £40 to £500.
Additional notes: Common option on M Sport and high-spec F31 Tourings. Cars without the electric tailgate option do not have this failure mode.
Electric water pump and thermostat failure
- Coolant warning light or low coolant message
- Heater blowing cold while engine is at temperature
- Faint coolant smell around the bonnet area
- Fault codes 2E81 / 2E82 / 2E83 logged via OBD
What to do about it: Replace electric water pump and thermostat together between 80,000 and 100,000 miles regardless of symptoms. Indie BMW specialist labour, around 1.5 to 2 hours.
If ignored: Engine overheats, head gasket damage possible, repair bill jumps to £1,500+.
UK repair exposure: £500 to £700.
Additional notes: Universal F30 / F31 issue. Plastic pump housing is the documented weak point.
Panoramic glass roof drainage blockage
- Water dripping inside on heavy rain
- Wet headlining around the roof rails
- Pooling water in either front footwell (front drains) or rear corners (rear drains)
What to do about it: Clear roof drainage tubes annually. Each corner of the panoramic roof has a drain that runs down the A or C pillar. DIY job with compressed air or a drain-rod kit; £50 to £100 if a specialist does it. Critical preventative.
If ignored: Water reaches the headlining, soaks the carpet, can damage Body Control Module (BCM) under the front carpet. Worst case £500+ repair and persistent damp smell.
UK repair exposure: £50 to £200.
Additional notes: Panoramic glass roof is a very common option on F31 Touring. Verify on viewing whether the car has it; cars with the standard solid roof don't have this failure mode. Drains blocking is the single biggest preventable F31 interior-damage source.
Rear lower control arm bushes
- Knocking from the rear over potholes
- Loose-feeling rear end on sweeping roads
- MOT advisory for rear lower arm bush deterioration
- Uneven inner-edge tyre wear on the rear
What to do about it: Replace both sides together with a four-wheel alignment afterwards. OEM rubber is the everyday-driver pick.
If ignored: Rear geometry drifts, premature tyre wear, eventual MOT failure.
UK repair exposure: £300 to £500.
Additional notes: Universal F-chassis wear item, identical to F30. Touring carries more rear-axle weight on average, so wear can appear slightly sooner on heavily-loaded cars.
FRM3 (Footwell Module) failure
- Indicators flashing erratically or not at all
- Lights randomly on, won't switch off
- Central locking unreliable
- Driver door window switches unresponsive
What to do about it: Re-flash the FRM3 module at an indie BMW specialist before symptoms appear. Replacement coded module if hardware is failed.
If ignored: Car becomes un-driveable at night with no working lights. MOT failure on lighting checks.
UK repair exposure: £150 to £600.
Additional notes: Same pattern across F-series. Pre-2014 builds highest risk.
Boot release button corrosion
- Boot release button on the tailgate fails to open the tailgate
- Visible corrosion or peeling on the boot button
- Boot only opens via the key fob or interior switch
What to do about it: Replace the rubber-sealed micro-switch behind the boot button before water reaches the contacts. £40 part, fifteen-minute fit.
If ignored: Cosmetic at first; eventually boot only opens via fob or interior switch.
UK repair exposure: £40 to £120.
Additional notes: Same issue as F30 saloon but more visible on Touring because the tailgate is used more often. Aftermarket replacement switches widely available.
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 deteriorating
- Rear air suspension bag age cracking (universal on F31)
- Brake disc corrosion on rear axle
- Anti-roll bar drop links worn
- Run-flat tyre sidewall damage from kerbing
- Headlight beam pattern misaligned (after suspension work)
- Damp signs in load bay or rear footwell (panoramic roof drain check)
UK trim levels
The UK trim ladder for the F31, in roughly ascending order of equipment and used premium.
| Trim | Description |
|---|---|
| SE | Base trim. Cloth seats, 16 or 17 inch alloys, manual or auto. |
| Sport | Sport seats, 17 inch alloys, sport steering wheel. Not the same as M Sport. |
| Modern | Light-colour interior accents and special leather. |
| Luxury | Chrome and wood trim, premium leather, quieter ride than M Sport. |
| M Sport | Most common UK trim. M body kit, lowered sport suspension, sport seats, 18 inch M alloys. |
| M Sport Plus | M Sport plus adaptive dampers, heated seats, Harman Kardon, sun protection glass. |
| M Sport Shadow Edition | Late 2017 onwards. Gloss black trim, upgraded materials, LED headlights standard. |
Options worth chasing
The factory options below add measurable used premium or change the ownership experience meaningfully.
| Option | Why it matters |
|---|---|
| Panoramic glass roof | Very common F31 option. Adds light to the cabin and visual appeal; introduces the drainage failure mode (£50 to £200 annual maintenance). Worth £300 to £600 used premium. |
| Electric tailgate | Very common option on M Sport. Useful with hands full of shopping or buggy. Failure mode: motor or sensor £40 to £500. |
| Adaptive M Sport suspension (VDC) | Genuinely transforms ride quality on UK roads on a Touring carrying load. Worth £500 to £800 used premium. Standard on M Sport Plus. |
| LED headlights with adaptive cornering | Standard on M Sport Shadow Edition; option on lower trims. |
| Harman Kardon hi-fi | Audible upgrade. Adds £500 to £700 used premium. |
| Head-up display | Popular UK option. Worth £400 to £600 used premium. |
| Heated front seats | Standard on M Sport from facelift; option earlier. |
| Heated rear seats | Worthwhile family upgrade on a Touring. Less common than front-only heating. |
| Comfort access (keyless entry and start) | Useful but battery-drain failure mode if the aerial fails. |
| Reversing camera + PDC | Standard on most M Sport late in cycle. Helpful on a longer-bodied Touring. |
| Apple CarPlay | LCI 2015 onwards only; pre-LCI cars cannot retrofit. |
| Cargo cover and luggage net package | Often missing on used cars; replacement OEM cargo cover £150 to £250. |
UK market pricing (2026)
| Example car | Indicative price | Notes |
|---|---|---|
| 2012 to 2013 320d SE Touring, 100,000+ miles | £3,700 to £5,800 | Pre-LCI N47, not ULEZ-compliant. Touring premium over saloon: around £200 to £500. |
| 2014 320d M Sport Touring, 80,000 miles | £6,500 to £9,500 | Pre-LCI N47, not ULEZ-compliant. M Sport spec premium. |
| 2015 LCI 320d M Sport Touring, 60,000 miles | £9,500 to £12,500 | Post-Sept-2015 build is typically B47 and ULEZ-compliant. |
| 2017 320d M Sport Touring, 50,000 miles | £12,500 to £15,500 | Sweet-spot used buy. Verify EGR recall. |
| 2018 320d M Sport Shadow Edition Touring, 30,000 miles | £16,500 to £19,500 | Best-equipped F31 diesel. Late LCI. |
| 2014 328i M Sport Touring, 60,000 miles | £8,500 to £11,500 | Pre-LCI N20 petrol. ULEZ-compliant from launch. |
| 2017 330i M Sport Touring, 50,000 miles | £14,500 to £17,500 | LCI B48 petrol. Smooth and quiet family-Touring pick. |
| 2018 340i M Sport Touring, 40,000 miles | £18,500 to £23,500 | LCI B58 inline-six. Performance Touring; rare. |
| 2016 330d M Sport Touring xDrive, 70,000 miles | £11,000 to £14,500 | B57 diesel; ULEZ-compliant; the family-distance pick. |
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 (F31-specific)
Add these F31-specific checks on top of our generic UK used-BMW inspection checklist:
- Park the car overnight at viewing. Check it's at correct ride height in the morning. Sagging at the rear is a £400 to £800 per-side air-bag job; both sides if past 100k.
- If the car has the panoramic glass roof: check the headlining and load bay corners for damp. Drain maintenance is £50 to £200 if missed; carpet damage if ignored can run to £500.
- Test the electric tailgate if fitted. Run open and close cycle twice; check it stops correctly on obstruction. Motor and sensor failures are £40 to £500 range.
- Same F30 checks for the rest: N47 cold-start rattle, FRM3 module health, water pump status, rear lower bushes, EGR recall verification on diesels.
- Verify the cargo cover and luggage net are present; replacement OEM cargo cover £150 to £250.
- Check the rear suspension by pushing down on each rear corner. It should rebound and stabilise quickly; sluggish behaviour suggests the compressor or air bag is degrading.
Buy, negotiate, or walk away
Buy
Post-September-2015 LCI build with B47 diesel or B48 petrol, M Sport trim, full service history, electric water pump and rear suspension bushes done within last 30,000 miles, rear air suspension level, panoramic roof drains clear, electric tailgate working cleanly.
Negotiate
Pre-LCI N47 diesel (factor £1,500 to £2,500 timing-chain risk and lack of ULEZ compliance). Sagging rear air suspension at viewing (£400 to £800 per side). Outstanding rear suspension bush MOT advisory (£300 to £500). Active or recent FRM fault on 2012 to 2014 build (£150 to £600). Cosmetic boot button corrosion (£40 fix).
Walk away
Cold-start rattle on an N47 with no chain history. Sagging rear air suspension PLUS damp headlining PLUS no service history (compounding red flags). Persistent FRM3 warnings that haven't been investigated. Salvage or write-off on HPI.
Long-term ownership verdict
Properly maintained, an F31 will run to 200,000+ miles regardless of engine. The chassis is the same as the F30 saloon and equally well-resolved. Touring-specific failures (rear air suspension, panoramic roof drains, electric tailgate) are all addressable for under £1,000 each. The biggest long-term differentiator remains engine choice: post-LCI B47 or B48 with a clean service history is cheaper to keep on the road than a pre-LCI N47 with deferred timing-chain work. Buy on the service file, not the spec sheet.
Related chassis
The F31 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 F31 listing
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Run a Bimmer.AI buyer report →Frequently asked questions
Is the BMW F31 Touring reliable?
Yes, with the same engine-dependent caveats as the F30 saloon. The chassis itself is well-resolved; main F31-specific concerns are the standard rear self-levelling air suspension (failure mode at 80,000 to 130,000 miles, £400 to £800 per side), the panoramic glass roof drainage (if fitted, annual clearance critical), and the electric tailgate motor on cars with the option. Otherwise: identical buying logic to F30.
What's the difference between F30 and F31?
Same generation, two body styles. F30 is the saloon (4-door), F31 is the Touring (estate, 5-door with hatchback). They share all engines, trims, the LCI cutoff, and most chassis-level fault patterns. The F31 has standard rear self-levelling air suspension (which the F30 saloon doesn't), and is more commonly fitted with the panoramic glass roof and electric tailgate options.
Is the F31 320d Touring ULEZ-compliant?
Same answer as F30 saloon: it depends on the build date. Pre-LCI N47 cars are Euro 5 and not compliant. Post-LCI B47 cars are Euro 6 and compliant. Transition happened around August 2014 in production, so cars registered late 2014 onwards are typically compliant. Verify on the V5 emissions class.
Should I worry about the panoramic glass roof?
Not if maintained. The roof has four drainage tubes (one per corner) that run down the A and C pillars and exit under the car. They clog with leaf debris and dirt over time. Clear them annually (compressed air or drain-rod kit, £20 DIY or £50 to £100 at indie). If they clog and rain pools in the tracks, water reaches the headlining and eventually the carpet, causing damage. The roof itself rarely fails mechanically.
How much should I pay for a 2017 F31 320d M Sport Touring?
In 2026, expect £12,500 to £15,500 with 50,000 miles, full service history and M Sport. That's around £200 to £500 Touring premium over an equivalent saloon. Options that add a meaningful used premium: panoramic glass roof, electric tailgate, M Sport Plus (adaptive dampers + Harman Kardon + heated seats), Shadow Edition trim.
Is the air suspension a problem on the F31?
Not a problem when it's working; it provides genuinely better ride quality on a Touring carrying load. It does eventually fail: the air bags age and harden, leading to overnight sagging at 80,000 to 130,000 miles. Replacement is £400 to £800 per side at an indie BMW specialist. Plan for it as a known F31 cost. Cars where both sides have already been replaced are slightly more attractive used buys.
Which F31 engine should I buy?
Same answer as F30 saloon. For UK daily use: 320d B47 (post-LCI, ULEZ-compliant). For long-distance: 330d B57 xDrive Touring. For petrol: 330i B48 or 340i B58. Avoid the 316d and the pre-LCI N47 320d without timing-chain receipts.
How long will an F31 last?
200,000+ miles is realistic with documented servicing, exactly the same as F30. Touring usage tends to be heavier (school runs, dog transport, tip runs) so rear suspension bushes and air bags do age slightly faster on a Touring than on a saloon. Still no structural concerns.
Why is there no F31 M3 Touring?
BMW didn't build an M3 in F31 form. F-generation M3 was saloon only (F80, 2014 to 2018). The first ever M3 Touring is the G81 M3 Touring (2022 onwards) on the current G20 generation. F31 buyers wanting M-performance get the 340i (B58, 326 bhp) which is genuinely fast and quite rare as a Touring.