Volkswagen Parts Guides

Part numbers, fitment and common faults for Volkswagen models — organised by model below.

DSG Gearboxes: Not All Variants Are Created Equal

Volkswagen's DSG dual-clutch automatic is fitted across nearly the entire range — Golf, Polo, Tiguan, T-Roc and beyond — and shared under different names across Audi (S tronic), Seat, Skoda and Cupra. When it's healthy, it genuinely delivers faster, cleaner gear changes than a traditional torque-converter automatic. But "DSG" isn't one single design, and which variant your car has matters considerably for both reliability and running costs. The DQ200, the most widely fitted variant, uses a dry-clutch design — lighter and more efficient than a wet clutch, but the clutch plates run hotter and wear faster as a direct consequence. It's found on smaller-engined cars: 1.0, 1.2, 1.4 and 1.5 TSI petrols, including base and mid-range Golf 7 and 8, Polo, and smaller-engined T-Roc variants. This is the variant with the strongest reputation for issues — dry-clutch judder, hesitation pulling away, and mechatronic unit faults are all genuinely well-documented, particularly in stop-start urban driving. By contrast, the DQ250, DQ381, and DQ500 all use a wet-clutch design, where the clutch plates run bathed in oil — meaningfully more durable, and the design used on higher-torque applications like the Golf R, Golf GTI (DQ381), and Transporter (DQ500).

Servicing Is the Single Biggest Factor in Whether Yours Causes Problems

Volkswagen specifies a DSG oil and filter change every 40,000 miles on the DQ200, DQ250, and DQ500 variants, extended to 80,000 miles on the newer DQ381 to reflect its improved fluid technology. These are maximum intervals, not minimums — heavy urban driving, towing, or a car that spends a lot of time in traffic benefits from earlier servicing. This is worth taking seriously: a huge proportion of "DSG failures" genuinely trace back to a skipped or overdue service rather than a fundamental design flaw, and a proper DSG service at an independent specialist typically costs a few hundred pounds — a fraction of the cost of the mechatronic or clutch pack repair that neglect eventually leads to. When buying used, confirm the DSG service history specifically, not just a general service stamp — many general services don't include the separate gearbox fluid change.

Timing Chain Tensioners on TSI Petrol Engines

Separately from the gearbox, several of VW's smaller turbocharged petrol engines — particularly early 1.4 TSI units — have a documented history of timing chain tensioner wear, showing up as a rattling noise on cold start that gets progressively worse. Left unaddressed, chain stretch can ultimately lead to serious engine damage, so a persistent cold-start rattle on a TSI-engined VW is worth having checked promptly rather than dismissed as a "normal" turbo petrol noise. On petrol direct-injection engines generally, running with low oil for extended periods accelerates chain stretch specifically, which is one more reason oil change discipline matters more on these engines than on older, simpler naturally-aspirated units.

Newer Isn't Automatically Better

It's a common assumption that the newest generation of any model is the safest used buy, but VW's own recent history complicates that a little: the Mk7 Golf (2013-2020) generally has a stronger, more settled reliability reputation than the Mk8 (2020-present), where well-documented software and electronics issues — infotainment freezes, instrument cluster glitches, and driver assistance warning quirks — have affected a meaningful number of early examples. Most have been resolved by software updates, so if you're looking at an early Mk8-generation VW specifically, confirming all available software updates have been applied is a genuinely worthwhile check before buying, alongside the usual DSG and timing chain checks above.

Find Your Part Fast

Each guide covers a specific part on a specific model, with fitment notes across generations, known failure symptoms, and honest advice on OEM versus aftermarket options.

Volkswagen Parts Guides

DSG Gearboxes: Not All Variants Are Created Equal

Servicing Is the Single Biggest Factor in Whether Yours Causes Problems

Timing Chain Tensioners on TSI Petrol Engines

Newer Isn't Automatically Better

Find Your Part Fast

Volkswagen Golf

Volkswagen Polo

Volkswagen Passat

Volkswagen Tiguan

Volkswagen Touran

Volkswagen Up!

Volkswagen T-Roc

Volkswagen Sharan

Volkswagen Caddy