BMW X3 xDrive28i Engine Replacement Compare Prices & Get Quotes

A BMW X3 xDrive28i rebuilt engine typically costs £1,500-£3,000 supply-only for the N20B20A unit, with B48 units ranging £2,200-£4,000 and N52 units £1,800-£3,200. Used engines start from around £700, while reconditioned units sit in the middle at £1,200-£2,800. Supply and fit adds £1,000-£1,800 labour, bringing the total fitted cost to £2,500-£4,800 for a rebuilt unit.

• N20B20A rebuilt (240hp): £1,500-£3,000 supply-only
• B48B20A rebuilt (245hp): £2,200-£4,000 supply-only
• N52B30 rebuilt (260hp): £1,800-£3,200 supply-only
• Supply & fit adds £1,000-£1,800 depending on workshop location

The most common signs are a whining noise when the engine is revved and a rattling or clacking noise coming from the front of the engine on cold start. Other symptoms include loss of power, engine management light illumination, and in severe cases, engine failure.

• First signs typically appear from 60,000-100,000 miles
• Pre-2015 N20 engines are at highest risk
• Ignoring the rattle risks catastrophic engine damage - the chain can snap and destroy the engine

It depends on the generation. For F25 xDrive28i (2013-2017) examples valued £5,000-£14,000, a specialist-fitted rebuilt engine at £3,200-£4,500 may represent 40-60% of the vehicle's value - evaluate condition carefully. For G01 examples (2018-2024) valued £15,000+, replacement is comfortably within vehicle value. For N52-equipped early F25 examples (2010-2012), a rebuilt engine is often not cost-effective unless the car is in exceptional condition.

• F25 xDrive28i (2013-2017): evaluate condition - specialist rebuild often better than dealer
• G01 xDrive28i (2018-2024): absolutely worth replacing - high residual value
• Early N52 F25 (2010-2012): often borderline - consider value of car first

The xDrive28i badge has been used across three different petrol engines. From 2010-2012, the N52B30 was a 3.0-litre naturally aspirated straight-six producing 260hp. From 2013-2017, the N20B20A was a 2.0-litre turbocharged four-cylinder producing 240hp. From 2018-2024, the B48B20A is a 2.0-litre turbocharged four-cylinder producing 245hp.

• N52B30: 3.0L naturally aspirated straight-six, 260hp, 2010-2012
• N20B20A: 2.0L turbo four-cylinder, 240hp, 2013-2017
• B48B20A: 2.0L turbo four-cylinder, 245hp, 2018-2024
• The N20 and B48 are not interchangeable without significant modification - always match the engine code to your VIN

A typical BMW X3 xDrive28i engine replacement takes 2-4 days for a specialist workshop, depending on the engine type and whether it's a like-for-like swap or a full rebuild.

• N20/N52 engine swap: 10-14 hours labour
• B48 engine swap: 10-14 hours labour
• Supply-only orders: 1-3 working days delivery
• Allow additional time for diagnostic checks and road testing

Yes - every rebuilt BMW X3 xDrive28i engine supplied through EnginesMarket carries a minimum 12-month unlimited-mileage warranty. Used engines typically come with a shorter warranty period (30-90 days), depending on the supplier.

• Rebuilt: 12-month unlimited mileage warranty
• Reconditioned: 6-12 months depending on supplier
• Used: 30-90 days typically