At a Glance
The Lexus Sc has 10 identified common problems across 1 generation, with the Z40 (2001-2010) being the most affected generation and tyres & wheels the most common problem category. Based on 38K MOT tests from DVSA data.
Problems are patterns in the DVSA data that occur significantly more often on a specific model than the UK average — confirmed at 99% statistical confidence. Read our DVSA MOT data methodology →
Below: generation-by-generation comparison of Lexus Sc common problems, MOT failure types, and pass-rate data drawn from DVSA records. Click any generation to see fuel- and engine-specific fault patterns, mileage-banded repair guidance, and the most common MOT failures testers record.
MOT Tests & Failures by Generation
Lexus Sc generations by MOT tests, failures, and identified problems from DVSA data
Hover over each bar for a full breakdown. Tap any bar to view that generation's problems.
Showing total MOT tests, failures, and known problems per make. Hover over each bar for a full breakdown.
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Help other Lexus Sc owners — report a problem and we'll add it to the database
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Browse Lexus Sc Generations
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Most Common Lexus Sc MOT Failures
Every reason Lexus Sc vehicles fail their MOT, ranked by frequency. Select an individual year to see only that year’s failures, or stay on ‘All time’ for the combined picture across our 20 years of DVSA data. Scroll inside the table for the full list.
| # | Failure | % of failures |
|---|---|---|
| 1 | Tyre tread depth below limit | 13.23% |
| 2 | Wiper blades deteriorated | 11.57% |
| 3 | Brake pads or linings worn | 6.72% |
| 4 | Number plate lamp not working | 6.03% |
| 5 | Suspension joint or bush worn | 5.50% |
| 6 | Shock absorber worn or leaking | 5.31% |
| 7 | Brake performance below minimum | 4.96% |
| 8 | Tyre condition | 4.70% |
| 9 | Front lamp not working | 4.00% |
| 10 | Windscreen washer not working | 3.47% |
| 11 | Exhaust system fault | 3.29% |
| 12 | Position lamp not working | 3.18% |
| 13 | Stop lamp not working | 2.85% |
| 14 | Headlamp aim defect | 2.27% |
| 15 | Catalytic converter efficiency low | 1.80% |
| 16 | Fog lamp not working | 1.53% |
| 17 | Headlamp fault | 1.44% |
| 18 | Brake hydraulic component worn | 1.19% |
| 19 | Coil spring broken or corroded | 1.12% |
| 20 | Horn not working | 1.10% |
| 21 | Indicator fault | 1.01% |
| 22 | Windscreen damage affecting view | 0.93% |
| 23 | Brake disc or drum worn | 0.90% |
| 24 | Parking brake performance below minimum | 0.79% |
| 25 | Battery loose or leaking | 0.73% |
| 26 | ABS fault | 0.60% |
| 27 | Rigid brake pipe corroded or damaged | 0.59% |
| 28 | Track rod end worn | 0.59% |
| 29 | Rear lamp not working | 0.58% |
| 30 | Parking brake condition | 0.56% |
| 31 | Steering rack fault | 0.48% |
| 32 | Rear fog lamp not working | 0.46% |
| 33 | Seat belt condition | 0.44% |
| 34 | Tyre size or type not matched | 0.29% |
| 35 | Dashboard warning lamp fault | 0.28% |
| 36 | Brake lever fault | 0.27% |
| 37 | Brake fluid level low or contaminated | 0.24% |
| 38 | Brake pedal movement restricted | 0.21% |
| 39 | Ball joint dust cover split | 0.21% |
| 40 | Compression ignition emissions above threshold | 0.21% |
| 41 | Flexible brake hose damaged | 0.21% |
| 42 | Suspension mounting corroded | 0.21% |
| 43 | Brake caliper fault | 0.20% |
| 44 | Mirror damaged or missing | 0.20% |
| 45 | Power steering pipe or hose leaking | 0.16% |
| 46 | Airbag warning light on | 0.15% |
| 47 | Spark ignition emissions above threshold | 0.15% |
| 48 | Front suspension fault | 0.13% |
| 49 | Suspension arm worn or corroded | 0.13% |
| 50 | Steering lock fault | 0.13% |
| 51 | Tyre pressure monitoring system fault | 0.13% |
| 52 | Electrical wiring fault | 0.12% |
| 53 | Wheel bearing worn | 0.12% |
| 54 | Body corrosion or damage | 0.10% |
| 55 | Bonnet catch or hinge fault | 0.09% |
| 56 | Subframe corrosion or damage | 0.09% |
| 57 | Body strengthening plate corroded | 0.09% |
| 58 | Tyre valve stem damaged | 0.09% |
| 59 | Vehicle structure corrosion | 0.09% |
| 60 | Brake fluid leak | 0.08% |
| 61 | Driveshaft fault | 0.08% |
| 62 | Fuel cap damaged or missing | 0.08% |
| 63 | Handbrake lever fault | 0.08% |
| 64 | Bumper damaged or insecure | 0.07% |
| 65 | Exhaust emissions above threshold (non-catalyst) | 0.07% |
| 66 | Rear suspension fault | 0.06% |
| 67 | Suspension unit fault | 0.06% |
| 68 | Brake fluid warning light on | 0.06% |
| 69 | Brake pedal fault | 0.06% |
| 70 | Engine oil leak | 0.06% |
| 71 | Front passenger door fault | 0.06% |
| 72 | Chassis condition | 0.05% |
| 73 | Front suspension joint worn | 0.05% |
| 74 | Suspension retaining or locking device fault | 0.05% |
| 75 | Electrical switch fault | 0.04% |
| 76 | Electronic stability control fault | 0.04% |
| 77 | Subframe mounting corroded | 0.04% |
| 78 | Air suspension levelling valve fault | 0.03% |
| 79 | Rear fog lamp warning light fault | 0.03% |
| 80 | Steering column fault | 0.03% |
| 81 | Transmission oil leak | 0.03% |
| 82 | Suspension linkage fault | 0.03% |
| 83 | Fuel tank corroded or leaking | 0.02% |
| 84 | Handbrake cable fault | 0.02% |
| 85 | Rear reflector damaged or missing | 0.02% |
| 86 | Speedometer fault | 0.02% |
| 87 | Steering arm worn | 0.02% |
| 88 | Steering free play excessive | 0.02% |
| 89 | Body security fault | 0.02% |
| 90 | Brake master cylinder fault | 0.02% |
| 91 | Drag link end worn | 0.02% |
| 92 | Driver door fault | 0.02% |
| 93 | Driver seat fault | 0.02% |
| 94 | Electronic braking system fault | 0.02% |
| 95 | Exhaust leak | 0.02% |
| 96 | Fuel pipe corroded or damaged | 0.02% |
| 97 | Headlamp levelling device fault | 0.02% |
| 98 | Headlamp washer not working | 0.02% |
| 99 | Hydraulic brake cylinder fault | 0.02% |
| 100 | Outline marker lamp not working | 0.02% |
| 101 | Passenger seat fault | 0.02% |
| 102 | Power steering pump fault | 0.02% |
| 103 | Power steering ram fault | 0.02% |
| 104 | Propshaft fault | 0.02% |
| 105 | Steering operation fault | 0.02% |
| 106 | Suspension rod worn or corroded | 0.02% |
| 107 | Undertray damaged or missing | 0.02% |
| 108 | MacPherson strut worn | 0.02% |
| 109 | Additional braking device fault | <0.01% |
| 110 | Anti-roll bar worn or corroded | <0.01% |
| 111 | Brake air or vacuum system fault | <0.01% |
| 112 | Brake cable, rod, lever or linkage fault | <0.01% |
| 113 | Brake servo fault | <0.01% |
| 114 | Brake valve fault | <0.01% |
| 115 | Driver airbag fault | <0.01% |
| 116 | Electric power steering fault | <0.01% |
| 117 | Electronic parking brake fault | <0.01% |
| 118 | Fuel hose damaged or leaking | <0.01% |
| 119 | Full power hydraulic brake fault | <0.01% |
| 120 | Halfshaft fault | <0.01% |
| 121 | Steering box fault | <0.01% |
| 122 | Steering wheel damaged or insecure | <0.01% |
| 123 | Tie bar or rod worn or corroded | <0.01% |
| 124 | Torque or reaction arm worn | <0.01% |
| 125 | Window damaged or won't operate | <0.01% |
Showing all 125 reasons — scroll inside the table for the full list.
Lexus Sc MOT Failures by Category
Total MOT failure occurrences for the Lexus Sc, grouped by category. Same data as the failures table above — just sliced by category instead of fault title. Hover a slice for the top failures in each category.
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Frequently Asked Questions
What are the most common Lexus Sc problems?
Based on analysis of 38K Lexus Sc MOT tests from DVSA data, we have 10 identified common problems across 1 generation. The most frequently flagged issue is "Tyre condition". Tyres & Wheels is the most common problem category.
Which Lexus Sc generation has the most problems?
The Lexus Sc Z40 (2001-2010) (2001–2010) has the highest number of identified common problems (12). Click the generation card above for the full breakdown.
How is this data calculated?
We analyse anonymised DVSA MOT test records under the Open Government Licence. An issue is classified as a "Common Problem" when it occurs significantly more often on a specific model than the UK average, confirmed at 99% statistical confidence. Read the full methodology page for details.
Can I report a problem with my Lexus Sc?
Yes — use the "Tell Us About Your Problem" form on this page. Your report helps other Lexus Sc owners spot problems early. All submissions are reviewed before being added to the public database.
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