BMW 4 Series — Price, Faults & Buyer's Guide
Everything you need to know before buying a used BMW 4 Series in South Africa — pricing by mileage, known faults, a buyer's inspection checklist, maintenance schedule and real owner feedback.
Low MileageLatest GenM SportPremium Brand
7.8
Good Value
Modern 4 Series with proven reliability, strong residuals, and BMW premium appeal—excellent for buyers seeking executive comfort and tech.
Est. Retail
R625k
Est. Trade
R545k
Annual Sales (SA)
~2,100
5yr Depreciation
38%
BMW 4 Series price in South Africa by mileageHigh confidence
| Mileage band | Trade-in estimate | Retail estimate |
|---|---|---|
| 0 – 20,000 km km | Est. R810k–R915k | Est. R987k–R1052k |
| 20,001 – 40,000 km km | Est. R718k–R812k | Est. R876k–R934k |
| 40,001 – 60,000 km km | Est. R639k–R722k | Est. R779k–R830k |
| 60,001 – 80,000 km km | Est. R570k–R645k | Est. R695k–R741k |
| 80,001 – 100,000 km km | Est. R508k–R574k | Est. R619k–R659k |
| 100,001 – 120,000 km km | Est. R450k–R509k | Est. R549k–R585k |
| 120,001 – 140,000 km km | Est. R399k–R451k | Est. R487k–R519k |
| 140,001 – 160,000 km km | Est. R359k–R406k | Est. R438k–R467k |
| 160,001 – 180,000 km km | Est. R319k–R361k | Est. R389k–R415k |
| 180,001 – 200,000 km km | Est. R285k–R322k | Est. R348k–R371k |
| 200,000+ km km | Est. R251k–R284k | Est. R306k–R326k |
Prices are estimated using modelled data for the SA market and may vary from an official industry valuation. Want the exact price for a specific vehicle? Use our Industry Valuation Report.
Common BMW 4 Series problems & repair costs
B46 Petrol Engine Carbon Build-up
Direct-injection engine prone to intake valve carbon deposits around 100k km, reducing efficiency and rough idle if not serviced with quality fuel and regular top cleanings.
iDrive Software Glitches
Touchscreen responsiveness, Bluetooth connectivity dropouts, and occasional infotainment freezes reported on 2024 models; usually resolved by OTA updates or full system reboot.
Transmission Fluid Synthetic Wear
ZF 8-speed automatic requires premium synthetic ATF; early neglect of scheduled replacements (80k km) can lead to sluggish shifts and premature wear.
Buyer's inspection checklist
🔧Engine & Drivetrain
Check gearbox for delayed engagement or hesitation — ZF 8AT can show wear if fluid not serviced; listen for grinding on cold start
Verify turbo boost pressure response — B46 turbo should spool smoothly; rough response suggests carbon or boost leak
🚗Body & Exterior
Inspect coupe roofline panel gaps and trim alignment — Gran Coupe has tight tolerances; misalignment hints at poor accident repair
Check M Sport body kit adhesion (spoiler, side skirts) — Glued-on aerodynamics can lift and rattle; cosmetic but annoying if loose
💡Interior & Electronics
Test iDrive touchscreen responsiveness and Bluetooth pairing — Software lag, Bluetooth dropouts, or frozen menus are known 2024 issues
Verify all adaptive LED headlight functions and coding — Complex electronics; glitches can require dealer recoding or replacement
📋Service History
Confirm all services logged at BMW dealer with stamped service book — Warranty voidance and diagnostics difficulty if independent servicing used
Verify no outstanding recalls or TSBs affecting turbo, gearbox, or iDrive — Check BMW SA portal; known campaigns may still be pending
Recommended maintenance schedule
highEngine oil & filter change (synthetic 0W30) — Engine sludge & wear
15,000 km or annually
R1,200–R2,200
R1,200–R2,200
highTransmission fluid (ATF) drain & refill (ZF 8HP) — Sluggish shifts & gearbox failure
80,000 km (first), then 160k km
R3,500–R5,500
R3,500–R5,500
mediumSpark plugs (iridium) — Rough idle & misfire
60,000 km
R2,500–R4,000
R2,500–R4,000
mediumAir filter & cabin filter replacement — Poor airflow & allergies
30,000 km
R800–R1,500
R800–R1,500
BMW 4 Series owner reviews
Owners praise the smooth turbo power, responsive handling, and BMW tech; concerns centre on software reliability and premium service costs. (76/100 owner approval)
👍
Turbocharged Performance & Efficiency
B46 420i delivers strong 252 PS with real-world fuel economy around 7.5 L/100 km; spirited acceleration without excessive thirst.
👍
Elegant Gran Coupe Design & Practicality
Low roofline and fastback styling turn heads; rear doors and 440 L boot offer genuine practicality over traditional coupés.
👎
iDrive Software Instability
Touchscreen lag, Bluetooth dropouts, and occasional freezes plague early 2024 models; OTA updates help but remain inconsistent.
👎
High Servicing & Parts Cost
Dealer-only maintenance, synthetic fluids, and premium parts (spark plugs >R1k each) inflate annual service bills beyond mainstream rivals.
BMW 4 Series specifications
| Engine | 2.0L 4-cyl Twin-Scroll Turbo (B46) |
| Power | 184 kW (252 PS) |
| Torque | 350 Nm |
| Transmission | 8-speed Automatic |
| Fuel consumption | 6.8 L/100 km (combined) |
| Fuel tank | 59 L |
| Boot capacity | 440 L (coupe roofline) |
| Kerb weight | 1,580 kg |
| Top speed | 235 km/h |
| 0–100 km/h | 7.4 seconds |
| Service interval | 15,000 km / 12 months |
| Service plan | BMW Maintenance Plus (3yr/60k km) |
| Warranty | 3 years / 100,000 km (comprehensive) |
| Original price | ~R1,010,000 (2024 list SA) |
Frequently asked questions
A used BMW 4 Series typically retails from around R625k depending on year, mileage and condition, with trade-in value around R545k. See the full pricing table above for estimates across all mileage bands.
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All information is either scraped, searched from live sources or AI training data. It is intended as a general research guide only and may not represent actual transaction values for a specific vehicle. RideReport is not a licensed valuations provider.