BMW 5 Series G30 520d: Review, Specs, and Common Problems
Introduction
The BMW 5 Series G30 has been in production since 2017 and ranks among the most respected executive sedans in its class. The 520d version, with its 2.0-liter diesel making 190 hp, long stood as the most balanced choice: it delivers comfort, performance, and fuel economy at the same time.
This review draws on owner feedback, discussions on enthusiast forums (BMWpassion, Bimmerpost, Reddit, Auto-doc.it), and road tests and technical publications (Quattroruote). Below: specs, on-road behavior, design details, common faults, and practical buying advice.
Specifications
| Parameter | Value |
|---|---|
| Engine | diesel, 4 cylinders, 2.0 liters (B47) |
| Power | 190 hp |
| Torque | 295 lb-ft |
| Transmission | Steptronic, 8-speed |
| Drive | rear-wheel or all-wheel xDrive |
| 0–60 mph | 7.5 s |
| Top speed | 146 mph |
| Fuel economy (rated) | 47–52 mpg |
| Fuel economy (real-world, combined) | 36–43 mpg |
| Fuel economy at 81 mph (highway) | 39–43 mpg |
| Curb weight | −220 lb versus F10 |
| Drag coefficient | 0.22 Cd |
In terms of weight, the G30 beats the previous F10 by about 220 lb thanks to aluminum and high-strength steels. Its 0.22 Cd drag coefficient is one of the best in the class; it works toward two goals at once: lower fuel consumption and lower noise.
Engine and Transmission
The B47 is a four-cylinder turbodiesel with a displacement of 2.0 liters. It produces 190 hp and 295 lb-ft and pairs with an 8-speed Steptronic automatic. Drive is either rear-wheel or all-wheel xDrive.
In owner reviews, the 2.0-liter diesel is described as an engine with smooth, progressive pull; its sound is noted as slightly more refined than its predecessors. For most owners, 190 hp is more than enough for everyday driving.
Handling and Comfort
The G30 is regularly called the best in its class for the balance between comfort and sportiness. Handling is rated as exemplary: precise steering, excellent grip. The chassis is stiffer and lighter than its predecessor, so a 5-meter sedan feels more compact on the move than it actually is.
Ride comfort is high, especially with the optional Dynamic Damper Control adaptive dampers: the suspension absorbs bumps well and stays stable on the highway. Sound insulation is excellent, with almost no road or wind noise; some owners note only a slight aerodynamic rustle from the mirrors at high speed.
Daily Driving
As an everyday car, the 520d G30 gets mostly positive marks. Comfort is above average, highway driving is relaxed, and in city traffic it’s maneuverable enough despite its size. The diesel runs smoothly and quietly, and the automatic shifts quickly and responsively.
Parking is the weak spot in the city. Five meters of length make it awkward, so owners recommend ordering the package with surround-view cameras and parking sensors. Rear visibility is limited by a thick pillar, which makes the assist systems almost mandatory.
Common Faults and Reliability
Based on forum material (Auto-doc.it, Bimmerpost), several recurring issues stand out on the 520d G30:
- Steering rack — replacement is needed when play or unusual noises appear. The repair is expensive.
- Driveshaft — vibrations and noises under acceleration.
- Diesel particulate filter (DPF) — clogs with mostly city driving; regular highway runs are needed for regeneration.
- EGR valve — gets fouled and causes power loss or a fault indicator.
- Start&Stop auxiliary battery — can discharge prematurely, making starting difficult.
Even so, most owners call overall reliability satisfactory — provided the service schedule is strictly followed.
Data Discrepancies
Top speed. The rated top speed of the G30 is 146 mph. Some owner reports claim the engine “pulls to 130 mph,” but that refers to the previous F10 520d in its 190 hp version, not the G30, so there’s no direct contradiction with the G30’s stated figures.
Fuel economy. The homologated figure of 47–52 mpg diverges from the real-world 36–43 mpg in combined driving. The gap is acknowledged, but the source data offers no single quantitative explanation for it.
Comparison with Competitors
| Model | Strengths | Notes |
|---|---|---|
| BMW 520d G30 | performance and driving enjoyment | size in the city |
| Audi A6 40 TDI | slightly better ride comfort | — |
| Mercedes E 220d | more traditional luxury | — |
| Jaguar XF 2.0d | sportier | less cabin space |
In fuel economy, the BMW ranks among the most efficient — partly thanks to its record drag coefficient.
Buying: New and Used
New. Consider options that boost comfort and safety: Dynamic Damper Control adaptive dampers, Parking Assistant Plus (360° cameras and automated parking assist), Head-Up Display (data projected onto the windshield), and Harman Kardon or Bowers & Wilkins audio systems.
Used. Per advice from a Bimmerpost thread, check the service history — all maintenance must have been done on time; ask whether the steering rack and driveshaft have been replaced; prefer examples with average mileage of 31,000–50,000 miles and a single owner; consider an extended warranty in case of expensive repairs.
A Bimmerpost user puts it this way: buying a used car that still has many years of service ahead of it instead of manufacturing a new one is an eco-friendly and sensible choice. The G30 remains a modern, tech-forward model, so a 2017–2018 example can be a good buy.
Owner Experience: Strengths and Weaknesses
- iDrive is considered one of the best on the market: intuitive commands, clear graphics, and a configurable, information-rich digital instrument cluster.
- The cabin is roomy, with good space for rear passengers; the seats are comfortable with power adjustment, though some owners find the padding a bit firm.
- Materials in the lower interior areas don’t always live up to the premium segment.
- Start&Stop sometimes feels too intrusive, and restarts aren’t always smooth.
- Maintenance costs are above average, and genuine parts are expensive. Exact amounts depend on the scope of work and the region.
- Residual value stays strong, especially on examples with a well-documented service history.
Verdict
The BMW 5 Series G30 520d is an executive sedan that successfully combines elegance, comfort, and sportiness. Owner reviews are mostly positive, and there are few serious weak points. The steering rack and driveshaft are known risk areas, but with careful maintenance and a warranty in place, they can be managed.
The car suits anyone who needs an all-rounder — for the city and for long trips — with running costs that are reasonable for the class. Be prepared for its substantial size and for spending on maintenance. One thing to do before buying: check the service history and the condition of the timing chain and DPF.
FAQ
Is the 520d suitable as a first car?
Yes, but its size can be tricky for a beginner — driving experience is desirable.
520d or 530d — which to choose?
The 530d offers more power and torque, but fuel consumption is slightly higher. The 520d is more efficient and sufficient for most scenarios.
Does the engine have any known problems?
The B47 is generally reliable, but check the timing chain (if it hasn’t been replaced) and the diesel particulate filter.