BMW 5 Series G30/G31 (2017–2023): Generation Overview

What This Model Is

The G30 is the seventh generation of the BMW 5 Series, produced from 2017 to 2023. The sedan reached the market in February 2017, the Touring wagon (G31) in June of the same year. The M550i and M5 versions (the F90 is technically closely related to the G30) followed in 2017–2018. The LCI facelift came in July 2020: updated lights, a different rear end, iDrive 7. The successor, the G60, has been in production since 2023.

With this generation, BMW switched completely to the modular B47/B48/B57/B58 engine family. That’s also when 48-volt mild hybrids appeared, along with the plug-in hybrids—the 530e and 545e. The car is considered well-built, but it has modern weak spots: the AdBlue/SCR systems, the OPF gasoline particulate filter, and electronic driver aids.

Engines

Four modular engines form the backbone of the lineup—B47, B48, B57, and B58. The gasoline B58 (540i) and B48 (530i) are considered the most reliable: both families are well proven, and the B58 is also built for very high mileage.

A separate topic that concerns used buyers is the timing chain. On the B47/B48/B57/B58 the chain sits at the front, as it should in a proper layout. The N47 and N20 problem—where the chain sat at the rear and stretched—is completely absent here.

Hybrid Versions

The lineup includes 48-volt mild hybrids and two plug-in hybrids—the 530e and 545e. The 530e only makes sense with regular charging from a home charging station. Without that option, the regular 520i and 520d are more efficient on fuel.

Transmission

The G30 runs the proven ZF 8HP automatic. The fluid needs changing no later than 50,000–62,000 miles—and noticeably earlier if the car frequently tows a trailer or sits in stop-and-go traffic. This is one of the few maintenance items where skimping on the interval costs more.

The LCI Facelift

The update began with the 7/2020 production date. New headlights, a larger radiator grille, new taillights, and reworked software.

Common Problems

Build and material quality in the G30 are high. Most service visits involve not the mechanicals but the exhaust aftertreatment systems and electronics.

The AdBlue/SCR system is the weak spot of the diesel versions. Code 4222 means “AdBlue/SCR quality implausible.” The cause is usually the wrong AdBlue, a faulty sensor, or the dosing module.

The AdBlue dosing valve is replaced component by component and requires follow-up coding. NOx sensors are replaced individually—each one is a separate part.

The second source of trouble is the OPF gasoline particulate filter: it clogs up with short trips and city driving.

Fault Codes

Fuel Economy

Real-world 520d fuel economy: 39–43 mpg on the highway, 34–39 mpg combined. For a diesel sedan of this class, that’s moderate.

Maintenance

There’s a distinction between minor and major service. With the BMW Service Inclusive (BSI) package, maintenance costs less than paying for each job separately.

Common Questions

When should the ZF 8HP fluid be changed?
Every 50,000–62,000 miles is recommended—earlier under severe conditions.

Does the G30 have timing chain problems?
No. The B47/B48/B57/B58 engines have a properly positioned front chain—the N47/N20 risk simply doesn’t exist here.

Is the 530e worth buying?
Only if you charge the car regularly. Without charging, the regular versions are more efficient.

The Bottom Line

The G30 is a solid, predictable generation with a strong engine lineup. If you’re shopping for a used one, look at the condition of the AdBlue/SCR systems and the OPF rather than at mileage—the B-series engines have plenty of life left in them. Start by checking for codes 4222/4225 and 4F8C, and by verifying the ZF 8HP fluid change interval.