Peugeot 508 II (R8) (2018 – 2025)

Reliability score : 6.2/10

The Peugeot 508 II (R8 generation) marks a radical departure from its predecessor, abandoning the traditional three-box sedan silhouette for a sleek, low-slung fastback (and a stunning SW station wagon variant). Positioned as a premium alternative in the D-segment, it boasts frameless doors, the futuristic i-Cockpit, and exceptional chassis dynamics. A mid-cycle facelift in 2023 introduced the new Peugeot shield logo and updated matrix LED lighting. While universally praised for its striking design and driving pleasure, its reliability profile is highly polarized, heavily dependent on the chosen powertrain. The entry-level Stellantis engines (1.2 PureTech and 1.5 BlueHDi) have well-documented, severe systemic flaws, whereas the 2.0 BlueHDi and PHEV variants offer a much more dependable own

✅ Strengths

Stunning exterior design (fastback and SW) that ages exceptionally well
Class-leading chassis dynamics, steering precision, and road holding
High-quality interior materials and futuristic i-Cockpit layout
Excellent EAT8 automatic transmission (smooth and responsive)
Outstanding fuel economy on the 2.0 BlueHDi
PSE version offers genuine sports car performance with AWD

⚠️ Weaknesses

Catastrophic reliability of the 1.2 PureTech and 1.5 BlueHDi engines
Cramped rear headroom and difficult ingress/egress due to the low roofline
Infotainment system is laggy and visually outdated on pre-facelift models
Frameless doors can cause wind noise at high speeds and freeze in winter
Poor rearward visibility
High depreciation, especially for non-PHEV models

🎯 Verdict

The Peugeot 508 II is a masterpiece of design and chassis engineering, but it is a minefield when it comes to powertrain reliability. If you are buying on the used market, strictly avoid the 1.2 PureTech and early 1.5 BlueHDi unless you have documented proof of recent, upgraded engine replacements. The sweet spot of the range is the 2.0 BlueHDi 160/180, which offers bulletproof reliability (save for standard AdBlue quirks) and perfectly suits the car's grand touring nature. The PHEV versions are compelling for tax purposes and daily commutes, but require a comprehensive warranty due to complex electronics and OBC vulnerabilities. Buy with your eyes wide open and prioritize engine choice over trim level.