The BMW G50 is the eighth-generation, petrol-powered 3 Series Saloon, revealed on 30 September 2026. Compared with the G20, it brings all-new styling, a fully digital cockpit and 48V mild-hybrid petrol engines — no diesel, no manual gearbox.
It is slightly larger outside but loses 30 litres of boot space. The similarly styled fully electric model is a separate car, the BMW i3.
What Is the BMW G50? The New 3 Series Explained
On 30 September 2026, BMW unveiled the eighth-generation 3 Series Saloon, known internally as the G50. It is the biggest reset for the petrol 3 Series in decades.
If you currently drive a G20, the practical question is simpler: what has actually changed between the two generations, and is it worth switching?
This guide compares them point by point, then covers what the changeover means for maintenance, parts and upgrades.
BMW G50 vs G20 Timeline: Launch, Production and Delivery Dates
The G20 (2018–2026) was the seventh-generation 3 Series. The G50 is its direct successor as the combustion-engined Saloon. Key dates at a glance:
Underneath, the G50 remains a rear-wheel-drive saloon in the classic 3 Series mould: long bonnet, driver-focused layout, straight-six power at the top of the range.
Why Did BMW Replace the G20 3 Series with the G50?
BMW positions the G50 as the continuation of the 3 Series' sporty driving tradition, brought up to date. The reasoning falls into three areas:
- Modernisation — the G20 platform dates from 2018; design and digital expectations have moved on
- Electrification — emissions rules reward 48V mild-hybrid powertrains; every G50 petrol engine has one
- A clear split — electric buyers get the separately developed BMW i3; petrol buyers get the G50
In short: the G50 exists to keep the petrol 3 Series current, without pretending to be an EV.
BMW G50 vs G20 Specs: Size, Engines, Boot Space and Features
▲ G50 gains ▼ G50 loses ● unchanged
Swipe sideways to see all columns. The first column stays in place.
| Category | G20 (2018–2026) | G50 (from 2026) | Change |
|---|---|---|---|
| Exterior | Classic BMW styling, facelifted 2022 | Neue Klasse design, flush door handles, wraparound LED tail lamps | ▲ All-new |
| Interior & tech | iDrive 7/8, up to 14.9" curved display | Panoramic iDrive: windscreen-wide strip + 17.9" central screen, OS X | ▲ New era |
| Powertrains | Petrol, diesel, plug-in hybrid, some manuals | 318 / 320 / M350 xDrive — petrol + 48V MHEV, 8-speed auto only | ▼ Fewer choices |
| Length | 4,713 mm | 4,765 mm | ▲ +52 mm |
| Width | 1,827 mm | 1,850 mm | ▲ +23 mm |
| Height | 1,440 mm | 1,455 mm | ▲ +15 mm |
| Wheelbase | 2,851 mm | 2,860 mm | ▲ +9 mm |
| Tracks | — | +43 mm front / +21 mm rear | ▲ Wider stance |
| Body stiffness | Baseline | Up to +50% | ▲ Stiffer |
| Boot capacity | 480 litres | 450 litres, 40:20:40 folding | ▼ −30 L |
| Wheels | Up to 19" on most versions | 18"–20" depending on version | ▲ Bigger options |
| Diesel / manual | Available (market-dependent) | None — a first for the nameplate | ▼ Gone |
| Parts ecosystem | Mature, huge aftermarket | New generation, separate fitment | ● Both fine |
Dimensional figures are European-market standard-wheelbase saloons; individual markets and body styles differ.
BMW G50 Exterior Design and Dimensions vs the G20
The G50 reads as a close relative of the electric i3 at first glance. Look longer and the 3 Series identity holds. What actually changed:
- Illuminated twin-kidney grilles and sharply angled daytime running lamps — the new BMW face
- Retractable door handles and wraparound LED tail lamps — cleaner surfaces, lower drag (Cd 0.23)
- Longer bonnet than the i3 — traditional 3 Series proportions retained
- Every panel, bumper and lamp is new — G20 body parts will not carry over
In short: 52 mm longer, 23 mm wider, tracks up 43/21 mm, body stiffness up to 50% higher. Sharper response and more cabin width, but a completely new parts catalogue.
BMW G50 Styling: Early Reactions to the New Look
The G50 is still in its launch window and nobody outside BMW has driven one yet, so opinion so far is about the styling alone.
- Kidney grille merges into the headlights instead of dominating the front
- Seen by many as the most cohesive 3 Series design in years
- Unifies BMW's design language with the i3
- Surfaces look heavy and sharp-edged to some
- Some prefer to see it in the metal before judging
- The real verdict waits for road tests
BMW G50 Interior and Technology: Panoramic iDrive vs G20 iDrive
The post-facelift G20 already had BMW's curved dual-display setup. The G50 takes a generation leap:
In short: a cabin from a different era, and G20 interior accessories will not fit.
BMW G50 Engines: 318, 320 and M350 xDrive vs G20 Powertrains
The G20 offered the broadest powertrain choice of any modern 3 Series. The G50 launches with the opposite philosophy: three petrol engines, all 48V mild-hybrids, all 8-speed automatic.
Versus the equivalent G20s:
- 320 vs 320i — 211 hp vs 184 hp: noticeably stronger mid-range
- M350 xDrive vs M340i — 443 hp vs 374 hp (EU): the new M Performance flagship is a genuine half-step toward the old M3, and its "Drift Moment" rear-drive mode arrives via software update in 2027
- What's gone — every diesel, every manual gearbox, and (for now) the 330e plug-in hybrid, though a new PHEV is confirmed within about a year
For drivers: fewer choices, but stronger, smoother and cleaner ones. The 48V system makes stop-start and low-speed manoeuvring noticeably more refined. Definitive judgements on steering and chassis feel belong to test drives, not launch specifications.
BMW G50 Boot Space, Practicality and Price vs the G20
Despite growing in every exterior dimension, the G50 actually loses boot space. The everyday scoreboard:
- Cabin width (better) — wider tracks free up shoulder room
- Stability (better) — wider stance, stiffer body
- Boot (worse) — 450 L vs 480 L; the 40:20:40 split-folding rear seat partly compensates
- Rear legroom (same) — only +9 mm wheelbase, so effectively unchanged
- Price — German-market pricing starts at €49,900 (318), €54,900 (320) and €80,900 (M350 xDrive); US-market pricing opens at $51,250 including destination. Expect launch premiums in year one
In short: both generations remain practical compact exec saloons. The G50 trades a little luggage room for a lot of technology.
Should G20 Owners Switch to the BMW G50?
It depends on what you value. Two honest lists:
- Want the Neue Klasse design and the Panoramic iDrive cockpit — a genuinely different product, not a mild refresh
- Crave six-cylinder performance — the M350 xDrive is a serious reason to trade up
- Value the latest driver assistance and don't mind first-year pricing
- Are happy with how it drives and it's paid off — it has already absorbed its steepest depreciation
- Want to avoid launch-year premiums, early-teething risk and a thin parts ecosystem
- Drive a diesel or a manual — there is no G50 equivalent, so a well-maintained G20 is the end of that road
For everyone else: wait until your target variant's full specifications and real-world test drives are published before committing, especially if you need a specific body style or the forthcoming plug-in hybrid.
BMW G20 Parts After the G50 Launch: Supply and Fitment
1. Parts supply for the G20 is unaffected. Eight-plus years of production means a huge installed base; OEM and aftermarket support continues for many years.
2. Do not assume cross-compatibility. The G50 is a new generation — dimensions, mounting points and electrical connections differ. Verify every part by part number and VIN before ordering.
BMW G20 Maintenance Checklist: Cooling, Oil Leaks, Suspension and Gearbox
If you're keeping your G20, check these areas as mileage climbs:
- Cooling system — hoses, thermostat and water pump are classic BMW inspection items
- Oil seepage — check the oil filter housing and valve cover gaskets
- Suspension — worn bushings and control-arm joints affect feel long before they fail
- Transmission — check fluid condition on higher-mileage 8-speed gearboxes
Caught early, all are inexpensive to address. And there's an upside to keeping the car: the G20 has one of the deepest upgrade catalogues of any modern BMW.
Popular BMW G20 Upgrades: Wheels, Suspension, Brakes and Lighting
A few well-chosen updates can keep an older 3 Series feeling fresh for years. And whether you are swapping wheels, changing brake pads or working through the maintenance checklist above, a set of jack pads helps you lift your G20 at the correct jacking points without damaging them.
Shop G20 Jack Pad Set – US Store →BMW G50 vs G20 Verdict: Which 3 Series Is Better?
| Category | Winner |
|---|---|
| Design & technology | G50 |
| Performance (per variant) | G50 |
| Powertrain choice | G20 |
| Boot space | G20 |
| Value & running costs | G20 |
| Parts & upgrade ecosystem | G20 |
The G50 wins on novelty: a new design language, a cabin built around Panoramic iDrive, electrified petrol power and stronger headline performance.
The G20 wins on maturity: proven mechanicals, a complete and competitive parts market, and far lower running costs for an owner who already has one.
Either way, confirm every part against your VIN before ordering. Our parts team can verify fitment for both generations.
FAQs
When was the BMW G50 officially revealed?+
BMW revealed the new combustion-engined 3 Series Saloon (G50) on 30 September 2026. It introduces a new exterior design and a fully digital interior while continuing the 3 Series' focus on sporty handling and everyday usability.
Is the BMW G50 replacing the G20?+
Yes. The G50 is the next-generation combustion-engined BMW 3 Series Saloon, following the G20. Available engines, equipment and launch timing vary by market, so check the specifications published for your country before ordering.
What are the main differences between the BMW G50 and G20?+
The main changes cover exterior styling, interior technology, the infotainment system and the powertrain range. The G50 adopts BMW's newer design language and Panoramic iDrive cockpit, while the G20 retains its previous-generation cabin layout and familiar styling.
Is the BMW G50 fully electric?+
No. The G50 is the new combustion-engined BMW 3 Series Saloon. The new fully electric model wearing similar styling is called the BMW i3. The two share design cues and interior technology, but their powertrains and platforms are entirely different.
Will BMW G20 parts fit the new G50?+
Not necessarily. The G50 is a new generation, and parts may differ in dimensions, mounting points, electrical connections and specifications. Always check the part number and vehicle-specific fitment information before ordering. Never assume that a part compatible with the G20 will also fit the G50.
Specifications are manufacturer launch figures for the European market and may vary by market, model year and powertrain. For any part purchase, verify fitment against your VIN.