Audi A5 B9 (F5) (2016–2025) (2016 – 2025)

Reliability score : 7.8/10

The second-generation Audi A5, known by the internal code B9 (or F5), was launched in 2016, adopting the MLB Evo platform from the Audi A4 B9. It is available as a coupe, Sportback (five-door), and convertible, offering a blend of sportiness, elegance, and technology. The design, while evolutionary, has maintained the model's strong identity. A major facelift occurred in late 2019 (2020 models), bringing aesthetic revisions (grille, headlights, bumpers), a technological update to the interior (new MMI touchscreen, removal of the rotary controller), and the widespread integration of mild-hybrid (MHEV) technology across many engines, particularly diesel and gasoline. The A5 B9 is generally perceived as a reliable, well-built, and pleasant car to drive, with a high level of interior finish qu

✅ Strengths

⚠️ Weaknesses

🎯 Verdict

The Audi A5 B9 is an excellent choice for anyone looking for an elegant, comfortable, and technologically advanced car. Its reliability is generally good, particularly for the most common diesel and gasoline engines (2.0 TDI and 2.0 TFSI), which represent an excellent compromise between performance and fuel consumption. For diesel engines (2.0 TDI and 3.0 TDI): They are particularly recommended for high-mileage drivers and long journeys. Fuel efficiency and torque are major assets. Vigilance should be paid to the AdBlue system and the EGR valve, which can incur costs if maintenance is not rigorous or if the vehicle is primarily used in the city. Post-facelift MHEV versions are slightly more complex, and the 12V/48V battery is a point to monitor. For gasoline engines (2.0 TFSI): They offer superior driving pleasure for more varied use, with good responsiveness. Water pump issues are known but manageable. MHEV versions also need monitoring for their electrical system. Purchase Verdict: BUY if the service history is clear and recalls have been performed. Prioritize post-facelift models (2019+) for technological improvements and more integrated MHEV systems, but be aware of potential c

Common issues

Défaillance du système AdBlue (SCR) High
🔧 80 000 – 150 000 km
💶 800 – 1 800 €
Vérifier l'historique d'entretien et la réactivité du système AdBlue.
Encrassement ou défaillance du filtre à particules (FAP) Medium
🔧 100 000 – 180 000 km
💶 800 – 2 000 €
Privilégier les longs trajets réguliers pour éviter l'encrassement.
Dysfonctionnement de la vanne EGR Medium
🔧 90 000 – 160 000 km
💶 500 – 900 €
Une conduite souple et des carburants de qualité peuvent prolonger sa durée de vie.
Fuite de la pompe à eau Medium
🔧 70 000 – 140 000 km
💶 400 – 700 €
Surveiller le niveau de liquide de refroidissement et les traces de fuite.

Estimated maintenance costs

Oil change £100 – 180
Timing belt £700 – 1 300
Complete brakes £350 – 700
Estimated annual budget £650 – 1 300

Indicative estimates (independent garage, UK market). Prices vary by region and year.