1.0 MPI (CHYA / CHYB)
2011–2023 · petrol · 999cc · 60hp
Engine codes: CHYA, CHYB
Reliability, common problems and owner reviews for the Volkswagen up! 1.0 MPI (CHYA / CHYB). Check this before you buy used.
The 1.0 MPI (CHYA/CHYB three-cylinder, naturally-aspirated, port-injected — the same simple unit shared with the Škoda Citigo, Seat Mii and Polo) is one of the most dependable small engines you can buy: no turbo, no direct-injection carbon, chain-driven and famously cheap to run. It's slow (especially the 60 hp), but mechanically about as low-worry as a modern car gets, which is exactly what makes the up!/Citigo/Mii trio such trusted city cars. Cautions are trivial age items — coils, sensors, water pump. The honest, bulletproof city-car choice.
Same engine, other cars
This is the same physical engine (CHYB) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
60–75 hp is slow loaded / on hills.
Fix / Workaround: Accept the character; ideal city car.
0Coils, sensors, water pump with age.
Fix / Workaround: Replace as needed.
Repair cost: €50–€350
Typically appears after: 120,000 km
The EA211 family's plastic coolant housing develops hairline leaks with heat cycles — pink crust around the unit is the telltale. Cheap part, moderate labor; ignoring it means running low on coolant in a 999 cc engine that doesn't have much to spare.
Fix / Workaround: Check for coolant residue around the housing at every service; replace the unit at the first sign.
Repair cost: €100–€300
Typically appears after: 100,000 km
Individual coils fail with age — a one-cylinder misfire on a 3-cylinder is very noticeable. Cheap DIY fix.
Fix / Workaround: Replace the failed coil; consider all three if one goes at high mileage.
Repair cost: €25–€90
Mileage Thresholds
After 200,000 km: Bulletproof, low-worry.
After 120,000 km: Coolant housing and coils are the only realistic age items — the chain-driven bottom end itself is effectively lifetime.
Fault Codes to Scan
Pre-Purchase Checklist
- ☐One of the safest small engines
- ☐No turbo / no DI carbon
- ☐Shared with Citigo / Mii / Polo
Frequently asked questions
Is the Volkswagen up! 1.0 MPI (CHYA / CHYB) reliable?
Reliable — The 1.0 MPI (CHYA/CHYB three-cylinder, naturally-aspirated, port-injected — the same simple unit shared with the Škoda Citigo, Seat Mii and Polo) is one of the most dependable small engines you can buy: no turbo, no direct-injection carbon, chain-driven and famously cheap to run. It's slow (especially the 60 hp), but mechanically about as low-worry as a modern car gets, which is exactly what makes the up!/Citigo/Mii trio such trusted city cars. Cautions are trivial age items — coils, sensors, water pump. The honest, bulletproof city-car choice.
What are the common problems and reviews for the Volkswagen up! 1.0 MPI (CHYA / CHYB)?
The most commonly reported problems: Modest power, Minor age niggles, Plastic thermostat/water-pump housing coolant weep, Ignition coil misfires.
Is a used Volkswagen up! 1.0 MPI (CHYA / CHYB) worth buying?
Minor issues only, easy to maintain, no design flaws. A safe used buy.