Quick Facts — Ford S-Max

Est. On UK Roads
120,000+
Years Made
2006–present
Common Engines
1.5 EcoBoost, 2.0 EcoBoost, 1.6 TDCi, 2.0 TDCi

6 Most Common Ford S-Max Problems

These are the faults most frequently seen on the Ford S-Max by UK garages — ranked by how commonly they occur and how much they cost to fix.

1
Timing Belt / Chain Issues
High Priority
Depending on engine variant, the S-Max uses either a timing belt (older TDCi) or chain (newer units). Belt replacement intervals must be respected. Chain models can develop rattle on cold starts.
💷 Typical repair cost: £350–£1,200
2
Dual Mass Flywheel (2.0 TDCi)
High Priority
The 2.0 TDCi S-Max shares the Galaxy's DMF weakness. A judder on pull-away or rattle at idle signals DMF wear.
💷 Typical repair cost: £600–£1,200
3
EGR Valve Failure
Watch
High-mileage diesel S-Max models develop EGR valve buildup causing rough running, hesitation and EML.
💷 Typical repair cost: £200–£500
4
Rear Diff / 4WD Coupling
Watch
AWD S-Max models can develop faults with the rear power transfer unit. Vibration under load is the main symptom.
💷 Typical repair cost: £400–£900
5
Front Shock Absorber Wear
Watch
The S-Max's sporty setup means the front shocks work hard. Worn shocks are a frequent advisory at MOT and affect the S-Max's handling advantage.
💷 Typical repair cost: £200–£400
6
SYNC Infotainment Faults
Low Priority
Older S-Max SYNC systems can become unresponsive or lose phone connectivity. Software updates usually resolve this.
💷 Typical repair cost: £0–£200

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Ford S-Max — MOT Tips

Check all seven seat belt buckles work correctly — MOT fail if any are faulty. Verify timing belt history on diesel models. Front suspension wear is common on higher mileage examples.

Engine management light on before your MOT? It's an automatic fail. Run a Find Your Problem Now → to get the likely cause and repair cost before booking the test.

Ford S-Max Tyres

Most Ford S-Max models run 215/55 R16 or 235/45 R18 tyres depending on trim level and year. Always check the tyre placard inside the driver's door for the correct size for your specific vehicle.

🔍 Not sure what's wrong? Check your symptoms & likely causes →

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Frequently Asked Questions

What is the most common problem with the Ford S-Max?

The most frequently reported issue on the Ford S-Max is Timing Belt / Chain Issues. Depending on engine variant, the S-Max uses either a timing belt (older TDCi) or chain (newer units). Belt replacement intervals must be respected. Chain models can develop rattle on cold starts.

How many Ford S-Maxs are on UK roads?

There are an estimated 120,000+ Ford S-Maxs currently on UK roads.

What tyres does the Ford S-Max use?

Most Ford S-Max models run 215/55 R16 or 235/45 R18 tyres depending on trim level and year. Always check the tyre placard inside the driver's door for the correct size for your specific vehicle.

Will a warning light fail my Ford S-Max's MOT?

Check all seven seat belt buckles work correctly — MOT fail if any are faulty. Verify timing belt history on diesel models. Front suspension wear is common on higher mileage examples.

Similar Issues on Other Models

Dacia Lodgy — shares the same EGR valve failure problem Ford Galaxy — shares the same dual mass flywheel problem

Summary

The S-Max offers genuine driving enjoyment alongside family practicality. Well-maintained diesel examples are good value but DMF and timing issues mean service history is essential.

If your Ford S-Max has a warning light on or a symptom you can't identify, a Find Your Problem Now → gives you likely fault causes, UK repair cost estimates and MOT risk for your exact vehicle — instantly.

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Other Ford Models

Ford Fiesta → Ford Focus → Ford Kuga → Ford Mondeo →