BMW
i5
Owner report available
Porsche
Taycan
Owner report available
BMW i5 vs Porsche Taycan
The short answer
Based on available data, the Porsche Taycan comes out ahead of the BMW i5 on 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
i5
Overall
Mixed to positive sentiment overall, with a clear distinction between praise for its luxury, comfort, and refinement, and criticism for its driving dynamics, software reliability, and platform origins. The vehicle is consistently described as a comfortable, quiet, and well-built luxury sedan with a premium interior feel, superior sound deadening, and a smooth ride. It is favorably compared to its sibling, the i4, for being more refined, spacious, and feeling like a more purposefully engineered electric vehicle.
Best version to buy
Insufficient owner data available to declare a consensus "best" trim. The M60 performance variant is mentioned but receives criticism for its handling.
Known issues
- Software glitches and system failures: includes complete audio system failure (no sound from any source), iDrive screen going blank/not booting, personal assistant malfunctions, and general bugginess. Frequency: recurrent.
- Digital Key/Phone-as-Key unreliability: failures to unlock or start the vehicle, potentially leaving the owner stranded, requiring a physical key as a backup. Frequency: recurrent.
- Handling and driving dynamics: described as feeling like a "boat," with noticeable understeer, lack of agility, and steering that lacks feedback and precision compared to expectations for BMW or rivals like Porsche. Frequency: recurrent.
Taycan
Overall
Mixed sentiment with a clear divide between driving experience and ownership reliability. The vehicle is universally praised for its exceptional driving dynamics, handling, and performance, described as "the best road-legal e-car thus far," "elegant and great fun to drive," and a "very good sports car." Owners highlight its rock-stable high-speed stability, insanely good road grip, and the significant benefit of its two-speed gearbox. The instant torque and direct, responsive EV driving experience are frequently cited as major positives, with some stating it has "ruined me for gas." However, this is heavily counterbalanced by very frequent and severe criticisms regarding reliability, software, and service.
Best version to buy
Insufficient owner data available to declare a consensus "best" version. Discussions mention various trims (4S, GTS, Turbo, Turbo S, Turbo GT) with different performance levels.
Known issues
- Major reliability and component failures: including transmission replacement, rear differential replacement, heater replacement, and high-voltage battery replacement (with a cited out-of-warranty cost of approximately $52,000).
- Software and infotainment bugs: system freezes, slow response, navigation failures, profile memory issues, charge planner glitches, Android Auto/CarPlay connectivity problems, and lack of software updates for older model years.
- Poor software support and updates: manufacturer does not update older model years to newer software versions, leaving navigation systems broken for extended periods (e.g., 8 months in Europe for 2020-2024 models). Frequency: very frequent.
The verdict
The Porsche Taycan is the better choice for most buyers.
It has more power on its best-equipped version than the BMW i5, based on the data above. If efficiency matters more to you than outright power, the BMW i5 is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the BMW i5 or the Porsche Taycan?
Owner reports show similar reliability sentiment for the BMW i5 and the Porsche Taycan. Check the known issues listed above for specific differences between the two.
Which is better for families, the BMW i5 or the Porsche Taycan?
The BMW i5 seats more passengers than the Porsche Taycan on its catalogued best-equipped version. Body type also differs: the BMW i5 is classed as a Station wagon, the Porsche Taycan as a Sedan.
Which has better fuel economy, the BMW i5 or the Porsche Taycan?
The EPA rates the 2027 BMW i5 at 91–116 MPGe combined and the 2026 Porsche Taycan at 77–93 MPGe, depending on the version.
Which is cheaper to maintain, the BMW i5 or the Porsche Taycan?
Exact maintenance costs aren't in our data, but reliability signals above are the closest proxy: fewer reported issues generally means lower repair costs over time.