Ford Focus IV (DEH) (2018 – 2025)

Reliability score : 7.2/10

Ford Focus IV (DEH) The fourth-generation Ford Focus (Mk4), built on the C2 platform, represents a significant leap in refinement, interior space, and technological integration compared to its predecessor. Launched in 2018, it maintained Ford's reputation for class-leading driving dynamics while introducing a more mature design and advanced driver-assistance systems (Co-Pilot360). A major facelift was introduced in late 2021 (Model Year 2022), bringing a revised front fascia with the Ford badge moved to the grille, standard LED headlights, and the introduction of the massive 13.2-inch SYNC 4 infotainment system. The engine lineup was also heavily electrified with 48V Mild-Hybrid (MHEV) technology, while several diesel options were phased out. Production is scheduled to end in 2025 with the

✅ Strengths

Class-leading chassis dynamics and steering feel
Significant improvement in rear passenger legroom over the Mk3
SYNC 4 infotainment system (post-facelift) is fast and intuitive
Excellent integration of the 48V Mild-Hybrid system (smooth start/stop)
Focus ST remains one of the best-handling hot hatches on the market

⚠️ Weaknesses

8-speed torque converter automatic can be jerky and unreliable
1.5 EcoBlue diesel engine reliability is severely compromised by its wet belt design
Interior plastics on pre-facelift models feel cheap in lower trims
High road and tire noise on models equipped with 18-inch or 19-inch wheels
Disappointing base audio system

🎯 Verdict

The Ford Focus Mk4 is a brilliant driver's car that suffers from a minefield of powertrain choices. If you value steering feel, chassis balance, and practicality, it is one of the best in the C-segment. Buying Advice: - AVOID the 1.5 EcoBlue diesel entirely due to its catastrophic wet timing belt design. - BE CAUTIOUS with the 8-speed automatic transmission; the later 7-speed dual-clutch (MHEV) or the 6-speed manual are much safer bets. - BUY the 1.0 EcoBoost MHEV (manual or 7-speed DCT) for daily duties, provided it has a flawless service history with the correct oil. - BEST PICK: The 1.5 EcoBoost (150hp) petrol or the phenomenal 2.3 EcoBoost ST offer the best balance of reliability and the performance this chassis deserves. Aim for a post-2022 facelift model to get the vastly superior SYNC 4 system and upgraded interior.