BMW 6 Series 650i Engine ReplacementCompare Prices & Get Quotes

For a BMW 650i, replacement costs vary significantly by generation. E63 650i (N62B48) engines range from £1,800-£3,200 used, £3,200-£5,500 reconditioned, and £4,500-£7,000 rebuilt. F06/F12/F13 650i (N63B44) engines are more expensive: £3,500-£6,000 used, £6,000-£10,000 reconditioned, and £8,000-£14,000 rebuilt (N63B44O0) or £5,000-£9,000 used, £9,000-£14,000 reconditioned, and £12,000-£18,000 rebuilt (N63B44T). Labour adds approximately £1,000-£1,500 for specialist fitment.

• E63 650i (N62): rebuilt from £4,500-£7,000
• F06/F12/F13 650i (N63): rebuilt from £8,000-£18,000 depending on variant
• All rebuilt engines include 12-month warranty

The most common telltale sign is blue smoke from the exhaust, particularly on startup or after idling. You may also notice excessive oil consumption requiring frequent top-ups between services. The problem occurs when the rubber valve stem seals harden and crack with age, allowing oil to seep into the combustion chamber. This affects both N62 (E63) and N63 (F-generation) 650i engines.

• Blue smoke from exhaust - especially on cold start
• Oil consumption exceeding 1 litre per 1,000 miles
• Check Engine Light may illuminate

It depends on the car's condition and value. For an E63 650i worth under £5,000, consider repair or a used engine rather than a full rebuild. For F-generation 650is worth £8,000-£15,000, a reconditioned or rebuilt engine typically justifies the premium via warranty and reliability. For 650is worth £15,000+, replacement cost is small relative to vehicle value. If the car is otherwise in excellent condition, a rebuilt engine with upgraded components can extend its life by 80,000+ miles.

• E63 650i (2005-2010): evaluate repair vs replacement carefully
• F06/F12/F13 650i (2011-2018): rebuilt engine often the best long-term value
• All rebuilt engines include 12-month unlimited-mileage warranty

Most BMW 650i engine replacements take 2-4 days for supply and fit at a specialist garage. The V8 engine's complexity - particularly on N63 twin-turbo units - means careful removal and installation is essential. Collection and delivery options are available nationwide, with most engines dispatched within 24-72 hours of order confirmation.

• Supply typically 1-2 days
• Fitment typically 1-2 days
• Total turnaround: 2-4 working days

Yes - all rebuilt BMW 650i engines supplied through EnginesMarket include a minimum 12-month unlimited-mileage warranty. Used engines typically come with 3-6 month warranties, while reconditioned units usually include 6-12 month cover. Extended warranty options are available on most rebuilt units. Always confirm exact terms with your chosen supplier before purchase.

• Rebuilt engines: 12-month unlimited-mileage warranty
• Reconditioned engines: 6-12 month warranty
• Used engines: 3-6 month warranty typically

The N62 is a 4.8-litre naturally aspirated V8 producing 367hp, fitted to E63/E64 650is from 2005-2010. The N63 is a 4.4-litre twin-turbocharged V8 producing 407hp (2011-2014) or 450hp (2014-2018), fitted to F06/F12/F13 650is. The N63 is significantly more powerful but also more complex, with additional failure points including turbochargers, high-pressure fuel pumps, and timing chain issues not present on the N62.

• N62: 4.8L naturally aspirated, 367hp, E63/E64 (2005-2010)
• N63: 4.4L twin-turbo, 407-450hp, F06/F12/F13 (2011-2018)
• N63 more complex with additional failure points