Audi A4 B8 (8K) (2007 – 2015)

Reliability score : 6.8/10

The Audi A4 B8 (code name 8K) marks a major turning point for the family car with the rings. Based on the new modular MLB platform, it moves its engine further back for better weight distribution, reducing the model's historical understeer. Launched in late 2007 and facelifted in late 2011 (Model Year 2012), it offers an interior finish quality that remains an absolute benchmark. However, this generation is notoriously known for serious reliability issues with its early-production TFSI petrol engines (EA888 Gen 2), tarnishing an otherwise excellent record. The 2012 facelift corrected the vast majority of these early flaws.

✅ Strengths

Exceptional interior finish and assembly quality (ages very well)
Safe and precise road handling (especially with Quattro)
High-level sound insulation
Timeless design, particularly in Avant (estate) and S-line versions
Post-2012 TFSI engines (Gen 3) are very powerful and efficient

⚠️ Weaknesses

Disastrous reliability of 1.8 and 2.0 TFSI engines before 2012 (oil consumption, chain)
Fragile and unpleasant Multitronic automatic gearbox (front-wheel drive)
Very high maintenance and spare parts costs
Average rear passenger space and boot volume for its size (4.70m)
Meager standard equipment on entry-level trims (Ambiente)

🎯 Verdict

The Audi A4 B8 is a car with two faces. If you are looking for a petrol model from before 2012 (1.8 or 2.0 TFSI), run away unless the engine has been completely rebuilt with supporting invoices (segmentation issue). In contrast, facelifted models (from late 2012 / 2013) equipped with 3rd generation TFSI engines are excellent family cars, reliable, powerful, and whose finish withstands the test of time with rare grace. Prioritize a Quattro version with a manual or S tronic gearbox (well-maintained), and avoid the Multitronic gearbox at all costs.

Common issues

Consommation excessive d'huile (moteurs 2.0 TFSI) High

🔧 60 000 – 150 000 km

💶 3 000 – 6 000 €

Vérifier l'historique d'entretien et surveiller très régulièrement le niveau d'huile.

Défaillance du tendeur de chaîne de distribution (moteurs 2.0 TFSI) High

🔧 100 000 – 200 000 km

💶 1 500 – 3 000 €

Écouter les bruits de cliquetis au démarrage et vérifier l'historique de remplacement.

Encrassement des soupapes d'admission (moteurs TFSI à injection directe) Medium

🔧 80 000 – 150 000 km

💶 400 – 800 €

Un décalaminage préventif peut être envisagé pour maintenir les performances.

Fuite de la pompe à eau Medium

🔧 80 000 – 150 000 km

💶 400 – 700 €

Surveiller le niveau de liquide de refroidissement et les traces de fuite.

Défaillance de la soupape PCV (Positive Crankcase Ventilation) Medium

🔧 100 000 – 180 000 km

💶 250 – 500 €

Ne pas ignorer le voyant moteur, un diagnostic rapide peut confirmer la panne.

Estimated maintenance costs

Oil change	£70 – 130
Timing chain	£1 200 – 2 000
Clutch	£750 – 1 400
Complete brakes	£300 – 600
Estimated annual budget	£650 – 1 200

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