Alpina
B7
BMW
M5
Alpina B7 vs BMW M5: 2024 Comparison
The short answer
Based on available data, the BMW M5 comes out ahead of the Alpina B7 on fuel economy and power. Check the specs table and owner sentiment below for the full comparison before deciding between the two. Both are covered by real owner reports on CarWizz.
Specs side by side
What owners say
B7
Overall
Owner sentiment is deeply polarized, split between immense satisfaction with the vehicle's unique character and significant apprehension regarding long-term reliability and cost of ownership. The Alpina B7 is universally praised for its exceptional blend of luxury and performance, described as offering "unparalleled comfort" and a "nuclear explosion" of power from its bespoke V8 engines. The driving experience is characterized as a "cocooned" and refined event, with a focus on high-speed stability and smooth, restrained dynamics rather than raw sportiness.
Best version to buy
Insufficient owner data available to declare a consensus "best" model year or generation. Feedback is spread across the E65 (2007-2008), F01 (2013-2015), and G11 (2020+) generations, with each noted for its specific engine (supercharged N62, twin-turbo N63, refined N63TU) and associated reliability concerns.
Known issues
- ⚠Catastrophic engine failures (turbocharger failure leading to oil contamination, head gasket leaks) requiring repairs in the $20,000-$49,000 USD range. Frequency: very frequent.
- ⚠Chronic oil leaks from multiple engine seals (valve cover gaskets, timing chain covers, alternator brackets, valve stem seals). Frequency: very frequent.
- ⚠High-pressure fuel pump failure. Frequency: recurrent.
M5
Overall
Sentiment is sharply divided by generation and is heavily influenced by ownership costs. The E60 generation (V10 S85 engine) is universally described as an unreliable "money pit" and "heap of junk" with catastrophic engine failure risks, particularly concerning rod bearings, leading to extremely high maintenance costs. The F90 generation (V8 S63 engine) receives a more positive reception for its brutal performance, all-wheel drive capability, and modern luxury, but is still acknowledged as a very expensive vehicle to maintain properly.
Best version to buy
F90 Competition (pre-hybrid V8): This generation is frequently cited as the "last good M5," praised for its reliability relative to the V10, monstrous performance from its twin-turbo V8, and attractive design. It is seen as a peak of the traditional M5 formula before the added weight and complexity of the hybrid G90.
Known issues
- ⚠Catastrophic engine failure (E60 V10 S85): Rod bearing failures leading to seized engines; described as one of the least reliable BMW engines ever made. Frequency: very frequent.
- ⚠Extremely high maintenance/repair costs: Described as an "absolute fortune" to maintain, with reports of $20,000+ spent over 10 years for low-mileage cars; major service bills anticipated as mileage approaches 100,000 km.
- ⚠Hybrid system and weight drawbacks (G90): Numb brake feel due to regen, excessive mass, and electromechanical systems that detract from driver engagement; noted quality control issues like missing door assemblies and non-functional heaters…
The verdict
The BMW M5 is the better choice for most buyers.
It has better fuel economy on its best-equipped version than the Alpina B7, based on the data above. If power matters more to you than running costs, the Alpina B7 is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Alpina B7 or the BMW M5?
Owner reports show similar reliability sentiment for the Alpina B7 and the BMW M5. Check the known issues listed above for specific differences between the two.
Which is better for families, the Alpina B7 or the BMW M5?
The BMW M5 seats more passengers than the Alpina B7 on its catalogued best-equipped version. Body type also differs: the Alpina B7 is classed as a Sedan, the BMW M5 as a Station wagon.
Which has better fuel economy, the Alpina B7 or the BMW M5?
The BMW M5 is more fuel-efficient on paper: 2.0 L/100km combined versus 11.1 L/100km for the Alpina B7, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Alpina B7 or the BMW M5?
Exact maintenance costs aren't in our data, but owner reports mention cost-related concerns more often for the Alpina B7 than the BMW M5. See the known issues comparison above.