Used car guide · 2000–2026

SEAT Leon common problems and MOT failures

What goes wrong on a used SEAT Leon, year by year: known faults from UK buying guides, the parts flagged at MOT more than on other cars (from 554,160 MOTs done during 2023–2025), and what to check before you buy one.

The 2026 SEAT Leon

Cars registered in 2026 haven’t had their first MOT yet (it’s due at 3 years old), so there are no MOT results to show. There are no known faults on record for this year in the UK buying guides we use, so the rest of this page covers the SEAT Leon as a whole.

1,219registered new in 2026 so far
2029first MOT due
Petrolmost common fuel (also diesel)
What to check on a 2026 car
  • Warranty left

    Ask for the date it was first registered and check how much of the maker’s warranty is left, and that it transfers to you. Electric and hybrid batteries usually have a longer, separate warranty.

  • Servicing

    Servicing on time with the maker’s schedule keeps the warranty valid. Ask for the service book or the dealer’s digital record.

  • Finance

    Nearly new cars are often still on finance. A history check shows outstanding finance, and whether it has been written off or stolen.

  • Recalls

    Ask whether any recall work has been done, and check the reg on GOV.UK’s free recall checker.

  • Logbook (V5C)

    The name and address should match the seller, and the VIN on the V5C should match the car.

Check for recalls on GOV.UK

Other years

Most years have their own guide. The year is when the car was first registered (it’s on the logbook, or check the reg below).

202620252024202320222021202020192018201720162015201420132012201120102009200820072006200520042003200220012000

What usually goes wrong with a SEAT Leon?

Known faults reported by owners, mechanics and UK buying guides, in our own words. Most apply to certain years or engines only, so check which the car has.

  • DSG automatic needs regular oil changes

    Cars registered 2013–2020 · DSG automatic

    The DSG automatic needs its oil and filter changing about every 40,000 miles. Cars serviced away from dealers or specialists sometimes miss it, which can lead to expensive gearbox faults.

    At the viewing: Look in the service history for a DSG oil change. Pull away gently several times and check for judder.

    If it needs doing: Gearbox sensor or solenoid, about £200–£500. ClickMechanic

    Source: Parkers: used SEAT Leon review

  • Seatbelt, airbag wiring and rear knuckle recalls

    Cars registered 2021–2025 · Some cars

    Recalls covered front seatbelt anchors, an airbag harness caught by the clutch pedal, a rear knuckle screw, engine covers that could detach and a high-voltage fuse.

    At the viewing: Ask a SEAT dealer to check the VIN for outstanding recalls.

    Source: What Car?: used SEAT Leon (2020 on) reliability

  • Timing chain wear (1.2 TSI petrol)

    Cars registered 2009–2012 · 1.2 TSI petrol (older engine)

    The older 1.2 TSI petrol uses a timing chain that can stretch. It starts as a rattle, especially when the engine first starts, and if it’s left the chain can fail and destroy the engine. Some garages advise changing it as often as every four years or 40,000 miles.

    At the viewing: Start the engine from cold and listen for a rattle in the first few seconds. Ask whether the chain has been changed, with an invoice.

    Source: Parkers: Volkswagen Polo (2009-2017) used review

  • Notchy manual gearbox

    Cars registered 2013–2020 · Manual gearbox

    Some owners report stiff or notchy changes in certain gears. A healthy Leon gearbox should slot into every gear with very little effort.

    At the viewing: On the test drive, go up and down through every gear, including reverse. Stiffness or crunching isn't normal.

    If it needs doing: Gearbox sensor or solenoid, about £200–£500. ClickMechanic

    Source: Parkers: used SEAT Leon review

  • Infotainment glitches and electrical warnings

    Cars registered 2021–2025 · All engines

    48% of cars in What Car?'s survey had a fault, mostly infotainment, non-engine electrics and bodywork, and many took over a week to fix.

    At the viewing: Use the screen and check no warnings stay on.

    Source: What Car?: used SEAT Leon (2020 on) reliability

  • Leaky rear light seals

    Cars registered 2013–2020 · All engines

    The seals on the rear light units can let water in. Condensation inside the lens is the first sign, and enough water can make the lights fail, which is an MOT fail.

    At the viewing: Look inside both rear lights for misting or water droplets, and check every bulb works.

    Source: Parkers: used SEAT Leon review

Common SEAT Leon MOT failures to check

Parts flagged at MOT well above the usual rate for cars the same age, for each fuel on its own. From the DVSA’s results for every MOT done in Great Britain during 2023–2025.

Petrol

  • Shock absorbers

    up to 10.2× usual

    Stands out on cars registered in 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 and 2022.

    Rough price £200–£300 (pair, average rear to front) ClickMechanic

    At the viewing: Push down hard on each corner. It should bounce once and settle. Look for oil on the shock absorber body.

  • Exhaust emissions (catalyst)

    up to 3.7× usual

    Stands out on cars registered in 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010 and 2013.

    Rough price £175–£900 (catalytic converter) ClickMechanic

    At the viewing: Look for smoke when revving the warm engine and for an engine warning light.

  • Drive shaft (CV) joints

    up to 2.9× usual

    Stands out on cars registered in 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 and 2009.

    Rough price £60–£350 our estimate

    At the viewing: Drive slowly on full steering lock in both directions and listen for clicking. Look for split rubber boots behind the front wheels.

  • Exhaust system

    up to 2× usual

    Stands out on cars registered in 2004, 2005, 2006, 2007, 2008, 2009, 2011 and 2012.

    Rough price £100–£500 (pipe or section) ClickMechanic

    At the viewing: Listen for blowing or rattling from underneath at idle, and look for black soot around joints.

  • Link ball joint covers

    up to 2.8× usual

    Stands out on cars registered in 2006, 2007, 2008, 2009, 2010, 2011 and 2012.

    Rough price £60–£150 (one joint) ClickMechanic

    At the viewing: Listen for knocking over bumps and check the rubber boots behind the wheels aren't split.

  • Coil springs

    up to 9.6× usual

    Stands out on cars registered in 2002, 2017, 2018 and 2019.

    Rough price £175–£400 (pair, one axle) ClickMechanic

    At the viewing: Look behind each wheel for a snapped spring coil, and listen for a clunk or twang when turning the wheel lock to lock with the car stopped.

Diesel

  • Shock absorbers

    up to 10.4× usual

    Stands out on cars registered in 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 and 2020.

    Rough price £200–£300 (pair, average rear to front) ClickMechanic

    At the viewing: Push down hard on each corner. It should bounce once and settle. Look for oil on the shock absorber body.

  • Braking performance

    up to 2× usual

    Stands out on cars registered in 2007, 2008, 2011, 2012, 2013, 2014, 2015 and 2016.

    Rough price £100–£350 our estimate

    At the viewing: On a quiet road, brake firmly from about 30mph. The car should stop straight without pulling.

  • Anti-roll bar link joints

    up to 3.3× usual

    Stands out on cars registered in 2006, 2007, 2008, 2009, 2010, 2011 and 2012.

    Rough price £60–£150 (one joint) ClickMechanic

    At the viewing: Listen for knocking over bumps and check the rubber boots behind the wheels aren't split.

  • Drive shaft (CV) joints

    up to 2.4× usual

    Stands out on cars registered in 2003, 2004, 2005, 2006, 2007, 2008 and 2009.

    Rough price £60–£350 our estimate

    At the viewing: Drive slowly on full steering lock in both directions and listen for clicking. Look for split rubber boots behind the front wheels.

  • Coil springs

    up to 14.4× usual

    Stands out on cars registered in 2018, 2019 and 2020.

    Rough price £175–£400 (pair, one axle) ClickMechanic

    At the viewing: Look behind each wheel for a snapped spring coil, and listen for a clunk or twang when turning the wheel lock to lock with the car stopped.

  • Diesel smoke emissions

    up to 4.2× usual

    Stands out on cars registered in 2005, 2006 and 2007.

    Rough price £175–£900 (catalytic converter) ClickMechanic

    At the viewing: Look for smoke when revving the warm engine and for engine or DPF warning lights.

Hybrid

  • Shock absorbers

    up to 8.8× usual

    Stands out on cars registered in 2020, 2021 and 2022.

    Rough price £200–£300 (pair, average rear to front) ClickMechanic

    At the viewing: Push down hard on each corner. It should bounce once and settle. Look for oil on the shock absorber body.

SEAT Leon MOT pass rate by year

Of the years since 2005 with plenty of MOT tests, the 2014 SEAT Leon did best (78% passed first time, 8 points above all 2014 cars) and the 2019 did worst (81%, 4 points below all 2019 cars). Older cars fail more, so compare each year with all cars registered the same year.

YearPass first timeAll cars that yearMOT tests
202289%89% +03,753
202188%87% +122,353
202086%87% -140,786
201981%85% -457,652
201881%83% -262,279
201781%80% +153,966
201681%77% +446,971
201579%74% +550,821
201478%70% +855,252
201373%67% +634,188
201267%64% +326,091
201164%62% +219,244
201062%60% +216,979
200961%59% +214,294
200859%57% +213,659
200759%57% +212,655
200655%56% -18,290
200560%57% +34,943
200461%57% +44,210
200361%57% +43,267
200262%58% +41,589
200161%60% +1757
200058%61% -3161 (small sample)

Questions to ask the seller before buying a SEAT Leon

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

  1. When was the DSG gearbox oil last changed?
  2. Have all the recalls been done?
  3. Has the timing chain been changed, and is there an invoice? Does it rattle when you start it from cold?
  4. Has the gearbox or clutch had any work?
  5. Have the rear lights ever been replaced or resealed?
  6. Any recent work on the shock absorbers? (Flagged at MOT 9.9× as often on the SEAT Leon as on other cars the same age.)

Looking at a SEAT Leon?

Check the actual car: its own MOT history, whether it already shows these weak spots and what to ask the seller. Free, no sign-up.

Where this comes from: MOT figures are the DVSA’s anonymised results for every MOT test done in Great Britain during 2023–2025, grouped by the year each car was first registered. How many are on the road is from the Department for Transport’s vehicle licensing statistics. Known faults are from UK buying guides, in our own words, with links. How we score