BMW X5: Best Years and Years to Avoid
The X5 is a heavy, complex SUV, so the engine choice matters more here than on almost any other BMW. The six-cylinder diesels are the durable backbone of the range; the V8 petrols (N63) are the ones that generate large bills. No generation is a blanket avoid, but the V8 years deserve real caution.
Quick answer
Best all-round pick: a G05 xDrive30d or an F15 xDrive30d/40d, both on the durable six-cylinder diesel. Be most careful with the V8 50i (N63) across every generation. The straight-six diesels are the sensible heart of the range; the V8s reward only documented, deep-pocketed buyers.
G05 (2018-present) Mixed
Chassis: G05
The current X5 is refined and, on the six-cylinder engines, dependable. The xDrive30d (B57) and xDrive40i (B58) are strong, proven units. The V8 M50i/50i (N63) is fast but carries the usual big-engine cost risks, so vet those separately.
| Best years | Any G05 xDrive30d or xDrive40i is a solid buy. Later cars benefit from the 2023 facelift updates. |
| Years to watch | M50i and 50i models use the N63 V8; treat those like earlier V8 X5s and demand full history. Verify xDrive45e hybrid battery health. |
| Engines to trust | xDrive40i (B58), xDrive30d (B57), M50d (B57) |
| Engines to check | M50i / 50i (N63 V8), xDrive45e plug-in hybrid (battery checks) |
Key risks
- N63 V8 (50i/M50i): coolant transfer pipe, timing chain guides and high oil consumption
- B57 diesel DPF regeneration needs; avoid short-trip-only cars
- xDrive45e hybrid: verify battery health and charging behaviour
F15 (2013-2018) Mixed
Chassis: F15
A comfortable, well-equipped SUV that is durable on the diesel engines and expensive on the V8. The xDrive30d and 40d (N57) are the sensible, long-lived choices; the 50i (N63) needs full history and a maintenance fund.
| Best years | 2013-2018 xDrive30d or xDrive40d (N57) with full service history are the durable sweet spot. The 25d/sDrive25d suit lower-mileage buyers. |
| Years to watch | Any xDrive50i (N63 V8) for coolant and timing-chain-guide issues, and high-mileage diesels for EGR and turbo wear. |
| Engines to trust | xDrive30d (N57), xDrive40d (N57), xDrive35i (N55) |
| Engines to check | xDrive50i (N63 V8), xDrive25d (N47, timing chain) |
Key risks
- N63 V8 (50i): coolant transfer pipe, injectors, timing chain guides and turbo oil use
- N47-based 25d timing chain on affected builds
- Diesel EGR, swirl flaps and DPF issues on neglected cars
- Air suspension wear at higher mileages
E70 (2006-2013) Caution
Chassis: E70
Now cheap to buy but potentially costly to keep, the E70 rewards careful buyers. The straight-six diesels can be robust, but the early 4.8i (N62) and the twin-turbo 50i (N63) carry serious, well-documented failure modes. Age and complexity are the real risks now.
| Best years | 2010-2013 xDrive30d/40d (N57) with full history are the safest way into an E70. The 3.0si (N52) is a simpler petrol alternative. |
| Years to watch | The 4.8i (N62) for valve stem seals and coolant transfer pipe, and the 50i (N63, 2010 on) for coolant, injector and timing-chain-guide issues. |
| Engines to trust | xDrive30d / 40d (M57/N57), 3.0si (N52) |
| Engines to check | xDrive50i (N63 V8), 4.8i (N62 valve stem seals), 35d (M57, swirl flaps) |
Key risks
- N63 V8 (50i): first-generation coolant transfer pipe, timing chain guides and heavy oil use
- N62 V8 (4.8i): valve stem seals (blue smoke on start-up) and coolant transfer pipe
- Diesel swirl flaps, EGR and air-suspension wear
- Age-related electronics, cooling and rust on high-mileage cars
The pick of the range
The value sweet spot is a 2013-2018 F15 xDrive30d or xDrive40d (N57) with full service history: a smooth, torquey six-cylinder diesel well suited to the X5's weight and mileage. If you want the newest platform, a G05 xDrive30d (B57) or xDrive40i (B58) is the safer long-term choice. Both avoid the V8 cost risks while keeping strong performance.
What to avoid, and why
The engine to approach with most caution is the V8 50i (N63) in every generation, plus the E70 4.8i (N62). The N63 has documented coolant transfer pipe failures, timing-chain-guide wear and high oil consumption; the N62 is prone to valve stem seals and coolant-pipe leaks. These can be owned successfully, but only with full history and a serious maintenance budget. Cheap purchase prices on early V8s hide potentially large bills.
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Frequently asked questions
What is the most reliable BMW X5 year?
The G05 generation (2018 on) with the xDrive30d (B57) or xDrive40i (B58) is the most reliable modern choice. Among older cars, a 2013-2018 F15 xDrive30d/40d (N57) is the durability benchmark for the range.
Which BMW X5 should I avoid?
No generation is a blanket avoid, but the V8 50i (N63) needs the most caution in every generation, along with the E70 4.8i (N62). Both have costly coolant and valvetrain issues. Buy them only with full history and a maintenance fund.
Is the BMW X5 50i (N63) reliable?
The N63 V8 is powerful but maintenance-heavy, with documented coolant transfer pipe failures, timing chain guide wear and high oil consumption. It can be owned successfully with full history and a repair budget, but it is not a cheap car to keep.
Is the F15 X5 reliable?
On the diesel engines, yes. The xDrive30d and 40d (N57) are durable and well suited to the car. The V8 50i (N63) and the N47-based 25d need more careful vetting for coolant and timing-chain history.
Petrol or diesel X5 for the UK?
For a heavy SUV covering real mileage, a six-cylinder diesel (30d/40d) is the natural and durable choice. Petrol X5s are dominated by the V8 50i, which carries higher running costs, so most UK buyers are better served by the diesel.
Is the E70 X5 worth buying?
As a cheap, condition-led purchase, the six-cylinder diesels can be. Avoid the early V8s unless you understand their costs, and budget for age-related electronics, cooling and air-suspension wear on any high-mileage example.