Audi
TT
Porsche
Cayman
Audi TT vs Porsche Cayman: 2020 Comparison
The short answer
Based on available data, the Audi TT comes out ahead of the Porsche Cayman 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
TT
Overall
Sentiment is generally positive, with strong affection for the TT's distinctive design, driver-focused interior, and engaging driving dynamics, particularly in higher-performance TTS and TT RS variants. The vehicle is consistently praised for its practicality as a two-seater, with surprisingly usable boot space, especially with rear seats folded. However, owner sentiment is heavily bifurcated by generation and maintenance history.
Best version to buy
For the Mk3 generation (2015-2023), the TTS is frequently recommended as the best balance of performance, daily comfort, and value over the base TT, while the TT RS is celebrated as the ultimate performance variant with its unique 5-cylinder engine. For earlier generations, the 225-hp Quattro model of the Mk1 is often favored over the front-wheel-drive 180-hp version.
Known issues
- ⚠**Mk1/Mk2 Generations:** Timing belt/chain system failures: Critical maintenance item on 1.8T engines; belt must be replaced every 60k-80k miles (97k-129k km) with water pump; chain stretch issues on later EA888 and VR6 engines.
- ⚠Electrical gremlins: Intermittent faults, failing instrument clusters (pixel loss, inaccurate gauges), faulty comfort control modules preventing window operation. Frequency: recurrent.
- ⚠DSG (S Tronic) mechatronic unit failures: High-cost repair for automatic models; requires documented service or rebuild at high mileage. Frequency: recurrent.
Cayman
Overall
Extremely positive sentiment across all generations, with the Cayman consistently praised as a benchmark for sports car handling, balance, and driver engagement. Long-term owner reports describe it as a "perfect sports car" that is rewarding on backroads and surprisingly capable as a daily driver, with good fuel economy and practical storage. The mid-engine chassis is universally lauded for its precision, rotation, and direct steering feel.
Best version to buy
Consensus is split by generation preference. For the 981 generation (2012-2016), the GTS trim with its naturally aspirated flat-six is highly regarded for its balance of power and character.
Known issues
- ⚠High maintenance and repair costs associated with German luxury brands. Frequency: very frequent.
- ⚠Complexity and quantity of interior buttons, with some described as feeling cheap. Frequency: recurrent.
- ⚠Prohibitive servicing costs for Porsche Carbon Ceramic Brakes (PCCB), specifically rotor replacement. Frequency: isolated.
The verdict
The Audi TT is the better choice for most buyers.
It has better fuel economy on its best-equipped version than the Porsche Cayman, based on the data above. If power matters more to you than running costs, the Porsche Cayman is worth a closer look instead.
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Frequently asked questions
Which is more reliable, the Audi TT or the Porsche Cayman?
Owner reports show similar reliability sentiment for the Audi TT and the Porsche Cayman. Check the known issues listed above for specific differences between the two.
Which is better for families, the Audi TT or the Porsche Cayman?
Both seat a similar number of passengers based on our data. The Audi TT is classed as a Cabriolet, the Porsche Cayman as a Coupe, which affects cargo space and ride height for family use.
Which has better fuel economy, the Audi TT or the Porsche Cayman?
The Audi TT is more fuel-efficient on paper: 8.7 L/100km combined versus 10.3 L/100km for the Porsche Cayman, based on the best-equipped catalogued version of each.
Which is cheaper to maintain, the Audi TT or the Porsche Cayman?
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.