2026 BMW 4 Series — Full Specifications
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The 2026 BMW 4 Series is a saloon/sedan offered with 2 engines (2L 4-cyl turbo, 3L 6-cyl turbo). Its most fuel-efficient configuration returns around 36 mpg (UK) / 30 mpg (US EPA) combined, with 35–36 mpg (UK) across all configurations. Owners often keep a BMW 4 Series workshop manual to hand for servicing and repairs.
Compared with the 2025 BMW 4 Series: Fuel economy is essentially unchanged at around 36 mpg (UK) combined. EPA lists new engine options for 2026: 3L 6-cyl turbo. No longer listed: 3L 4-cyl turbo.
Full Specifications
| Engine (most efficient) | 2L 4-cyl turbo |
|---|---|
| Engine options | 2L 4-cyl turbo · 3L 6-cyl turbo |
| Transmission (most efficient) | Automatic (S8) |
| Fuel Type | Premium Gasoline |
| Powertrain | Hybrid |
| Drive | Rear-Wheel Drive |
| Body Style | Saloon/Sedan |
| Passenger Volume (EPA) | 86 cu ft (2,435 L) |
| Luggage Volume (EPA) | 12 cu ft (340 L) |
| Fuel Economy (UK) | 36 combined / 32 urban / 42 extra-urban mpg |
| Fuel Economy (US EPA) | 30 combined / 27 city / 35 highway mpg |
| CO₂ Emissions | 177 g/km |
| EPA Greenhouse Gas Score | 6 / 10 (10 = lowest emissions) |
| EPA Est. Annual Fuel Cost | $2,750 (15,000 mi/yr, US prices) |
Engine & Transmission Options
EPA lists 4 configurations for the 2026 BMW 4 Series across 2 engines (2L 4-cyl turbo, 3L 6-cyl turbo). Combined fuel economy ranges from 29 to 30 mpg (US), or 35 to 36 mpg (UK), depending on engine, transmission and drive. The headline figures at the top of this page describe the most fuel-efficient configuration.
| Engine | Transmission | Drive | MPG (UK) | MPG (US) | CO₂ g/km | Fuel cost / yr |
|---|---|---|---|---|---|---|
| 2L 4-cyl turbo (Hybrid) | Automatic (S8) | All-Wheel Drive | 36 | 30 (27/34) | 183 | $2,750 |
| 2L 4-cyl turbo (Hybrid) | Automatic (S8) | Rear-Wheel Drive | 36 | 30 (27/35) | 177 | $2,750 |
| 3L 6-cyl turbo (Hybrid) | Automatic (S8) | All-Wheel Drive | 35 | 29 (26/33) | 187 | $2,850 |
| 3L 6-cyl turbo (Hybrid) | Automatic (S8) | Rear-Wheel Drive | 36 | 30 (27/34) | 184 | $2,750 |
MPG (US) shows combined, with city/highway in brackets. Highlighted row = the configuration used for the headline figures. Source: US EPA fueleconomy.gov.
EPA measures interior passenger volume at 86 cubic feet (about 2,435 litres) and luggage volume at 12 cubic feet (about 340 litres). These are US EPA interior-volume figures; they are measured differently from the boot capacity numbers UK manufacturers quote.
Owner Essentials for the 2026 BMW 4 Series
Running Costs: 2026 BMW 4 Series
Covering around 8,000 miles a year in a 2026 BMW 4 Series at 36 mpg combined, expect roughly 1,010 litres of fuel annually — multiply by your local price per litre for a cost estimate. For US owners, the EPA estimates about $2,750 a year in fuel for the most efficient configuration (15,000 miles, national average prices). Work out exact fuel costs with the fuel cost calculator on 247Calculators.
Convert between MPG and L/100km with the unit converters on 247QuickTools. Not sure what tyre size fits? 247TyreCheck explains tyre sizing.
Only need this car occasionally? See our buy vs rent comparison.
2026 BMW 4 Series Safety Ratings (NHTSA)
No NHTSA crash-test rating is on record for this model year. The NHTSA rates only a subset of vehicles each year; you can browse every rated vehicle on our NHTSA Safety Ratings hub.
Recalls & Owner Complaints (NHTSA)
NHTSA lists no safety recall campaigns for the 2026 BMW 4 Series as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
Owners have filed 2 complaints with NHTSA about the 2026 BMW 4 Series. The most-reported areas are Tires (1), Electrical system (1), Power train (1). That is well below the median of 12 complaints across the 10 BMW 4 Series model years in our data.
Used-buyer checklist for the 2026 BMW 4 Series
Based on where NHTSA recalls and owner complaints cluster for this model year, these are the areas worth checking before you buy:
- Tyres (1 owner complaint) — Check tyre age and wear and ask about any tyre recalls.
- Electrical system (1 owner complaint) — Test every switch, window, light and warning lamp on a test drive, and ask about battery or alternator replacements.
- Transmission & drivetrain (1 owner complaint) — On the test drive, watch for hesitation, jerking or slipping between gears and ask for transmission service history.
Source: US NHTSA recall and consumer-complaint databases, retrieved 6 October 2026. Complaints are unverified owner reports, not confirmed defects. Check any vehicle by VIN at nhtsa.gov/recalls, and see our guide to checking a used car for recalls.
How It Compares
BMW models in our database average about 28 mpg (UK) combined on their most efficient configuration; the 2026 BMW 4 Series's 36 mpg is 8 mpg above that make average. Its 177 g/km CO₂ figure is 63 g/km lower than the 240 g/km BMW average.
Of the 13 BMW 4 Series model years we cover, the 2026 is the most economical on its best configuration (36 mpg UK combined). See every BMW 4 Series year side by side.
Last updated: · Data: US EPA (fueleconomy.gov) and NHTSA safety ratings 18 July 2026; NHTSA recalls and complaints 6 October 2026; Wikidata & curated EU catalogue 18 July 2026; European generation and engine data from Wikipedia 7 October 2026
Vehicle data sourced from manufacturer specifications. Always verify with your vehicle handbook or a qualified mechanic. This is a reference tool, not professional advice.
Recommended Accessories for the 2026 BMW 4 Series
Frequently Asked Questions
What engine does the 2026 BMW 4 Series have?
EPA lists 2 engines for the 2026 BMW 4 Series: 2L 4-cyl turbo, 3L 6-cyl turbo. The most fuel-efficient configuration pairs the 2L 4-cyl turbo with a automatic (s8).
What is the fuel economy of the 2026 BMW 4 Series?
The most efficient configuration returns around 36 mpg (UK) combined, or 30 mpg on the US EPA cycle. Across all configurations the UK combined figure runs from 35 to 36 mpg.
How much does the 2026 BMW 4 Series cost to fuel per year?
The US EPA estimates about $2,750 a year in fuel for the most efficient configuration, based on 15,000 miles of mixed driving and national average fuel prices. Your own cost will depend on mileage and local prices.
Does the 2026 BMW 4 Series have any recalls?
NHTSA lists no safety recall campaigns for the 2026 BMW 4 Series as of 6 October 2026. Recalls can be issued years after a model is sold, so it is still worth checking your own VIN.
What are the most common problems reported for the 2026 BMW 4 Series?
Among the 2 owner complaints filed with NHTSA, the most-reported areas are Tires (1 complaint), Electrical system (1 complaint), Power train (1 complaint). Complaints are unverified owner reports, not confirmed defects, and raw counts rise with how many cars were sold.
How much interior and luggage space does the 2026 BMW 4 Series have?
EPA measures interior passenger volume at 86 cubic feet (about 2,435 litres) and luggage volume at 12 cubic feet (about 340 litres). These are US EPA interior-volume figures, which are measured differently from the UK boot-capacity numbers manufacturers quote.