BMW X1 F48 Engines -The Complete UK Guide
Every engine fitted to the second-generation X1 F48 -from the 1.5-litre B38 three-cylinder to the 2.0-litre B48 four-cylinder, the B47 diesels and the xDrive25e plug-in hybrid. Real UK costs, honest reliability data, and BMW's first front-wheel-drive X1. Backed by 154+ real UK F48 enquiries in 2025 [BMW-VERIFIED].
Explore F48 Engines
BMW X1 F48 Engine Codes -The Complete Database
Every engine fitted to the X1 F48 specifically -from the entry-level sDrive18i to the range-topping xDrive25d and xDrive25e plug-in hybrid.
Overview
BMW X1 F48 -Overview
The second-generation BMW X1 (codenamed F48) was unveiled at the September 2015 Frankfurt Motor Show and entered production in June 2015.
Built on BMW's modular front-wheel-drive UKL2 platform, the F48 marked a significant departure from its rear-wheel-drive predecessor, the E84. The engine range launched with 1.5-litre B38 three-cylinder and 2.0-litre B48 four-cylinder petrols, alongside B37 and B47 diesels. A plug-in hybrid xDrive25e joined the range in 2020. A facelift (LCI) was introduced in 2019. Production ended in June 2022, replaced by the third-generation U11 X1.
Key Facts
Platform
BMW UKL2 (front-wheel-drive)
Predecessor
BMW X1 E84
Successor
BMW X1 U11
Sibling body styles in this generation
N/A -F48 is the sole body code (sDrive front-wheel-drive, xDrive all-wheel-drive)
Market Intelligence
The X1 F48 generated 154 real UK engine enquiries in 2025 [BMW-VERIFIED], concentrated on the 2.0-litre petrol and diesel variants as the most popular UK choices.
Best & Worst Engines
Best Petrol Overall
B48A20A/B -20i/25i (2015–2022)
“The B48 2.0-litre is BMW's most refined four-cylinder -smooth, responsive and genuinely reliable. The 20i offers 178–192 PS; the 25i delivers 231 PS. Both are a significant step up from the older N20.”
Who it's for: buyers who want the best all-round F48 petrol.
Best Diesel Overall
B47C20B -20d (2015–2022)
“The B47 is a significant improvement over the N47 -timing chain issues are far less common, and EGR cooler problems are well-documented and manageable. The 20d's 190 PS offers excellent economy without sacrificing performance.”
Who it's for: buyers who want diesel economy with genuine pace.
Highest Risk
B37C15A -16d
“The 1.5-litre three-cylinder diesel is the least powerful engine in the F48 range -116 PS is marginal for an SUV of this weight. It's also the least common, meaning parts and specialist knowledge are harder to find.”
Who it's for: buyers who prioritise fuel economy above all else.
Most Expensive Failure
B47B20 -25d
“The 25d is the range-topping diesel with 231 PS -twin-turbo complexity adds significant maintenance costs. Injector and turbo repairs are more expensive than on the single-turbo 20d.”
Who it's for: buyers who want diesel performance and are prepared for the bills.
Best Value
B48A20A -20i
“The 20i is the most common F48 petrol -reliable, efficient and well-supported. A £2,800–£4,500 recon makes sense against an £8,000–£22,000 vehicle.”
Who it's for: buyers who want the most cost-effective F48 ownership.
Most Overlooked
B38A15A -18i
“The 1.5-litre three-cylinder is often overlooked by buyers chasing bigger engines -but it's a genuinely charming unit, reliable and surprisingly perky in the F48's lightweight UKL2 chassis. Perfect for urban driving.”
Who it's for: buyers who want low running costs and don't need four-cylinder pace.
BMW X1 F48 -Ownership Economics
The F48 rule
A £2,800–£4,500 B48 recon against an £8,000–£22,000 F48 sits at 13–56% of the car's value -within our 70% BMW threshold. Even against a high-mileage £6,000 example, the same recon is 47–75% -assess carefully. The F48 holds value well enough that engine replacement is almost always viable.
Common Problems
F48 Engine Replacement Costs -By Engine and Condition
No Generation variance from the Engine Page baseline -no dedicated Engine Pages exist for these families yet, so baseline figures are drawn from the EM_Proprietary_Data Table A. Labour hours estimated at 8–12 hours for three-cylinder engines and 10–14 hours for four-cylinder engines. The UKL2 platform's transverse layout affects labour access.
Core Variants
Diesel & Petrol Lineup
Scope note: All variants listed are X1 F48 only. sDrive denotes front-wheel drive; xDrive denotes all-wheel drive. The xDrive25e plug-in hybrid (2020–2022) combines a 1.5-litre three-cylinder petrol engine with an electric motor for 220 PS system output.
Market Intelligence
Most Requested E90 Engines (2025)
- 1.1. B48A20A 20i -930 requests [BMW-VERIFIED]
- 2.2. B47C20B 20d -930 requests [BMW-VERIFIED]
- 3.3. B38A15A 18i -pattern data
Most Requested E90 Variants
- 1.1. xDrive20d
- 2.2. xDrive20i
- 3.3. sDrive18i
Average E90 Replacement Cost
£3,800 reconditioned, supply only [BMW-QUOTE]
Most Common E90 Failures
- 1.1. Cooling system leaks (B-series)
- 2.2. EGR cooler (B47 diesel)
- 3.3. Battery/charging system (xDrive25e PHEV)
BMW X1 xDrive20d
F48 (B47)
5
enquiries
BMW X1 xDrive20i
F48 (B48)
4
enquiries
BMW X1 xDrive25e
F48 (B38 PHEV)
2
enquiries
FAQ
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