Generations
CT200h_Gen1 — First Generation
2011–2017
1.8L Hybrid, 1.8L Petrol
Top issues to watch for
The most serious Lexus Ct problems ranked by severity. We track 5 known issues — here are the ones you need to know about first.
Dangerous
Exhaust heat shield missing or damaged
The exhaust and fuel tank heat shields on CT200h models are prone to detachment due to mounting tab corrosion and thermal cycling. When missing, the hot exhaust pipe can heat the fuel tank or surrounding components beyond safe limits. This creates a genuine fire risk and is classified as dangerous by MOT testers. The hybrid system's frequent engine start-stop cycles accelerate thermal fatigue of the shield mounting points.
What happens if ignoredMissing heat shields create a serious fire risk by allowing hot exhaust components to heat the fuel tank and surrounding areas beyond safe limits. The vehicle will fail its MOT test and should not be driven until shields are properly secured. Replacement shields and mounting hardware typically cost £50-150 fitted.
Independent garage
£50–£100
Specialist
£60–£120
Main dealer
£100–£200
Parts only
£25–£75
Major
CV joint wear in driveshafts
The front driveshaft CV joints on CT200h models show accelerated wear compared to conventional vehicles due to the hybrid system's torque delivery characteristics and frequent start-stop cycles. The electric motor provides instant torque that stresses the CV joints differently from a conventional engine. Outer CV joints typically fail first, causing clicking sounds on full lock and eventual complete failure of drive to the affected wheel.
What happens if ignoredWorn CV joints will eventually fail completely, causing sudden loss of drive to one front wheel. The vehicle remains steerable but performance is significantly reduced. Complete CV joint failure can damage the differential and require more expensive repairs. Typical repair involves replacing the entire driveshaft assembly.
Independent garage
£200–£350
Specialist
£250–£400
Main dealer
£400–£600
Parts only
£150–£250
Major
Brake pedal travel excessive requiring adjustment
The CT200h's hybrid braking system combines conventional hydraulic brakes with regenerative braking from the electric motor. The brake pedal feel is managed by a complex brake-by-wire system that can develop excessive pedal travel as components age. This affects the transition between regenerative and hydraulic braking, particularly during emergency stops. The issue appears more frequently than on conventional vehicles due to the additional complexity of the hybrid brake system.
What happens if ignoredExcessive brake pedal travel reduces emergency braking effectiveness and may cause the driver to misjudge stopping distances. The vehicle will fail its MOT test and requires immediate attention. In extreme cases, the brake system may not provide adequate stopping power in an emergency. Professional diagnosis is required to identify whether the issue is with the hydraulic system or the hybrid brake control module.
Independent garage
£150–£300
Specialist
£200–£400
Main dealer
£300–£600
Parts only
£50–£200
Major
Hybrid battery cooling fan failure
The hybrid battery pack in the CT200h requires active cooling to maintain optimal temperature for performance and longevity. The dedicated cooling fan can fail due to bearing wear or electrical faults, causing the hybrid battery to overheat during extended use. This triggers warning lights and reduces hybrid system performance to protect the expensive battery pack. The fan is located behind the rear seat and draws air through vents in the load area.
What happens if ignoredFailed cooling can cause expensive hybrid battery damage through overheating. The hybrid system will reduce performance to protect itself, significantly affecting fuel economy and power delivery. Battery replacement costs £3,000-5,000, making cooling system maintenance critical. The cooling fan replacement is relatively straightforward and much less expensive than battery damage.
Independent garage
£200–£300
Specialist
£250–£350
Main dealer
£350–£500
Parts only
£100–£200
1 more known issues tracked
Including wear items, electrical niggles, and generation-specific problems. Check a specific car to see which issues apply to its age and mileage.
Check a specific car →MOT failure hotspots
Based on DVSA MOT test data. These are the items where the Lexus Ct fails at a significantly higher rate than the average car.
Fire risk due to fuel tank shield or exhaust sh...
Bodywork · 40-60k miles
MOT failure rate: 21x the fleet average
Sample: 12,081 tests
Fuel pipe or hose damaged
Bodywork · 150k+ miles
MOT failure rate: 18x the fleet average
Sample: 3,100 tests
Exhaust system damage
Bodywork · 40-60k miles
MOT failure rate: 16x the fleet average
Sample: 30,423 tests
Excessive wear or play in a universal joint or ...
Steering · 120-150k miles
MOT failure rate: 7.8x the fleet average
Sample: 6,246 tests
Service brake pedal has insufficient reserve tr...
Brakes · 40-60k miles
MOT failure rate: 6.2x the fleet average
Sample: 17,337 tests
Headlight fault
Lights & Electrics · 40-60k miles
MOT failure rate: 5.5x the fleet average
Sample: 184 tests
Buying a Lexus Ct?
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Related
Lexus Ct reliability FAQs
What are the most common problems with the Lexus Ct?
The Lexus Ct has 5 known issues across 3 severity levels. The most serious are: Exhaust heat shield missing or damaged.
Is the Lexus Ct reliable?
The Lexus Ct has 1 dangerous and 3 major known issues. Most can be avoided with a thorough pre-purchase check and full service history.
How much does it cost to fix Lexus Ct problems?
Repair costs range widely. The most significant issue (Exhaust heat shield missing or damaged) costs £50–£100 at an independent garage. Minor issues can be under £200. Always get a full inspection before buying.