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BMW · Mid-Size · 2020–2026

BMW 4er G22

Weaknesses, engine ratings and buying advice

★★★★★
3.0 / 5.0 · Based on 5 engine variants
Most Fun Engine

480–510 PS

3.0L Biturbo Benzin

550 hp, −100 kg, titanium exhaust — 1,000 units

Legendary!

Generations

Engine Overview

The BMW 4er G22 is available with 8 engine variants — from 116 to 510 hp. 4 variants had engine changes — the model year is crucial.

420d · Diesel· 184–190 PS Engine Change
2020 2026
Be Careful 6 weaknesses
Show all weaknesses →
2020 2026
Be Careful 6 weaknesses
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430d · Diesel· 258–265 PS Engine Change
2020 2026
Be Careful 5 weaknesses
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2020 2026
Be Careful 5 weaknesses
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420i · Benziner· 184 PS
2020 2026
Be Careful 6 weaknesses
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430i · Benziner· 252–258 PS Engine Change
2020 2026
Be Careful 6 weaknesses
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2020 2026
Be Careful 6 weaknesses
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440i · Benziner· 326 PS
2020 2022
Be Careful 12 weaknesses
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M440i · Benziner· 360 PS
2020 2026
Be Careful 12 weaknesses
M440i xDrive · Benziner· 374 PS
2020 2026
Be Careful 12 weaknesses
Show all weaknesses →
420d · Diesel Mild-Hybrid· 184–190 PS Engine Change
2020 2026
Be Careful 6 weaknesses
Show all weaknesses →
2020 2026
Be Careful 6 weaknesses
Show all weaknesses →

The BMW 420d (Diesel, 184–190 PS) comes with 2 different engines: B47D20 (2020–2026, Be Careful) und B47D20 (2020–2026, Be Careful). Pay attention to the model year for the 420d!

The BMW 430d (Diesel, 258–265 PS) comes with 2 different engines: B57D30 (2020–2026, Be Careful) und B57D30 (2020–2026, Be Careful). Pay attention to the model year for the 430d!

The BMW 420i (Benziner, 184 PS) has the B48B20 (2.0L Turbo) — rated: "Be Careful", 6 known weaknesses.

The BMW 430i (Benziner, 252–258 PS) comes with 2 different engines: B48B20 (2020–2026, Be Careful) und B48B20 (2020–2026, Be Careful). Pay attention to the model year for the 430i!

The BMW 440i (Benziner, 326 PS) has the B58B30 (3.0L Turbo) — rated: "Be Careful", 12 known weaknesses.

The BMW M440i (Benziner, 360 PS) has the B58B30 (3.0L Turbo) — rated: "Be Careful", 12 known weaknesses.

The BMW M440i xDrive (Benziner, 374 PS) has the B58B30 (3.0L Turbo) — rated: "Be Careful", 12 known weaknesses.

The BMW 420d (Diesel Mild-Hybrid, 184–190 PS) comes with 2 different engines: B47D20 (2020–2026, Be Careful) und B47D20 (2020–2026, Be Careful). Pay attention to the model year for the 420d!

Vehicle Weaknesses

WeaknessCost
!Complete software failure — driver assistance / iDrive

On early G22/G26 models, sporadic complete software failures: iDrive freezes, navigation fails.

Symptoms: Warning 'Support restricted', music/radio failure, navigation no longer updates.
Ad Headunit BMW G22Software-Update BMW G22
 Medium
!48V mild hybrid battery charging error

On the M440i xDrive with 48V mild hybrid, the battery can become deeply discharged after short-distance driving.

Symptoms: Warning 'Battery cannot be charged', power steering can temporarily fail.
from 87,000 km
Ad 48V battery BMW G22DC/DC Wandler BMW
 High
!Software faults and DCT control issues

After software updates, unwanted downshifts at 120 km/h to 7th gear. Sporadic electrical errors after service.

Symptoms: Automatic downshifts, rough running after engine service, warning lights.
Ad Software-Update G82DKG control unit G82
 High
NHTSA Owner Complaints
Above Average
2 complaints · 2020–2026
Other
2 ⚠ 2
Brakes
2 ⚠ 2
Collision Avoidance
1 ⚠ 1
Electrical
1 ⚠ 1

Top Reported Issues

⚠ Other (2 complaints)
⚠ Brakes (2 complaints)
⚠ Collision Avoidance (1 complaints)
Source: NHTSA (nhtsa.gov) · 2026-03

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Known Problems and Issues

A total of 52 weaknesses have been documented for the BMW 4er G22 (2020–2026) — 38 engine-related and 14 vehicle-related. Typical issues affect Electronics, Other, HVAC, Brakes.

4er (B47D20, 2020–2026) — Be Careful: Timing chain elongation on early models (2014–2016), EGR cooler leak with fire risk (recall), DPF clogging with short-trip use. Power: 184–190 PS.

4er (B57D30, 2020–2026) — Be Careful: EGR cooler failure, Timing chain elongation on early models, Turbocharger bearing damage at high mileage. Power: 258 PS.

4er (B48B20, 2020–2026) — Be Careful: Timing chain guide rail breaks, Oil filter housing leaking — coolant loss, Coolant bleed line at cylinder head breaks. Power: 184–190 PS.

4er (B48B20, 2020–2026) — Be Careful: Timing chain guide rail breaks, Oil filter housing leaking — coolant loss, Coolant bleed line at cylinder head breaks. Power: 252–258 PS.

4er (B58B30, 2020–2026) — Be Careful: Oil filter disintegrates — engine damage risk, Plastic oil filter housing cracks — coolant/oil mixing, PCV valve / valve cover membrane failed. Power: 374 PS.

4er (B58B30, 2020–2026) — Be Careful: Oil filter disintegrates — engine damage risk, Plastic oil filter housing cracks — coolant/oil mixing, PCV valve / valve cover membrane failed. Power: 360 PS.

4er (B58B30, 2020–2022) — Be Careful: Oil filter disintegrates — engine damage risk, Plastic oil filter housing cracks — coolant/oil mixing, PCV valve / valve cover membrane failed. Power: 326 PS.

4er (S58B30, 2022–2026) — Be Careful: Oil cooler leaking from stone impact, Connecting rod bearing wear with tuning, Main bearing shells recall (manufacturing defect 2021). Power: 551 PS.

4er (B47D20, 2020–2026) — Be Careful: Timing chain elongation on early models (2014–2016), EGR cooler leak with fire risk (recall), DPF clogging with short-trip use. Power: 184–190 PS.

What to watch out for with the BMW 4er? See the detailed listing of all engine and vehicle weaknesses in the sections above.

Frequently Asked Questions

What problems and weaknesses does the BMW 4er G22 have? +
The BMW 4er G22 has 38 known engine weaknesses and 14 vehicle weaknesses.
What should I look for when buying a used BMW 4er G22? +
faq.watch_a_none
Which engine is recommended? +
Be careful: S58B30 (3.0L Biturbo), B48B20 (2.0L Turbo), B58B30 (3.0L Turbo), B47D20 (2.0L Diesel), B57D30 (3.0L Diesel). No engine is rated 'Good Choice'. The most fun to drive is the S58B30 (3.0L Biturbo).
Which BMW 4er G22 engine is the most fun? +
The {code} ({displacement}) offers the most driving fun in the BMW 4er G22 — rated: "Legendary!". {description} The M4 CSL is the sharpest road car BMW M has ever built: 550 hp, 650 Nm, titanium exhaust with metallic shriek instead of generic turbo sound. 100 kg lighter via carbon roof, no rear bench, no cupholders. Michelin Cup2-R tyres as standard, chassis so hard that every bump goes straight through the carbon bucket seat into your spine. Nordschleife in 7:18 — faster than any BMW before. On the road brutal, uncomfortable and uncompromising. 1,000 units, all sold out immediately.
Is the BMW 4er G22 worth buying used? +
The BMW 4er G22 requires careful consideration — choosing the right engine variant is crucial.
What horsepower variants are available for the BMW 4er G22? +
The BMW 4er G22 is available with engine variants from 116 to 510 hp. Petrol: S58B30 (3.0L Biturbo), B48B20 (2.0L Turbo), B58B30 (3.0L Turbo). Diesel: B47D20 (2.0L Diesel), B57D30 (3.0L Diesel).

Last updated: February 2026 · All information without guarantee