2018 Mercedes-Benz CLS 2.9L Diesel · KT18 JJF
2018 Mercedes-Benz CLS (2.9L, diesel). First registered 01 Jun 2018. Recorded mileage 55,061 miles. MOT valid until 25 Feb 2027. Taxed until 01 Feb 2027.
- Make & Model
- MERCEDES-BENZ CLS
- Year / Origin
- 2018 · Northampton
- Safety Recall
- Unknown
- MOT Status
- Valid until 25 Feb 2027
- Road Tax
- Taxed (01 Feb 2027)
- Recorded Mileage
- 55,061 mi
- ULEZ Compliance
- ULEZ Compliant (Euro 6 Diesel)
- Fuel & Engine
- DIESEL · 2.9L
- Reliability Guide
- Common Faults
KT18 JJF Key Findings
- 5 MOT tests recorded
- Latest MOT passed on 26/02/2026
- 55,061 miles recorded at latest MOT
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
MOT Roadworthiness: Excellent
This rating reflects historical MOT pass rates and recurring advisory wear patterns from official DVSA test logs. Note that roadworthiness does not verify outstanding finance, insurance write-offs, or stolen records.
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Technical Specifications
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KT18 JJF Mileage History
- 26/05/202225,546 mi
- 05/06/202333,231 mi+7,685 mi
- 10/06/202442,034 mi+8,803 mi
- 03/06/202549,433 mi+7,399 mi
- 26/02/202655,061 mi+5,628 mi
Average of roughly 7,858 miles per year across 5 recorded odometer readings.
KT18 JJF MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
5 MOT tests are recorded for this 2018 Mercedes-Benz Cls (KT18 JJF) between May 2022 and February 2026.
The record contains 5 passes and 0 failures.
The record shows no MOT failures, although 2 advisory notices note items to monitor.
Across all tests, the most frequently flagged areas are: Suspension (1 issue), Tyres (1 issue). Repeated mentions in one area can indicate an ongoing pattern worth checking in person.
In total 2 advisory notices are recorded. Advisories flag items that passed but may need attention before the next test; they are not evidence of how well the vehicle has been serviced.
Buyer's Guide & Inspection Advisory
Expert automotive synthesis from historical MOT defect records and market benchmarks.
Our Verdict
This is a well-maintained 2018 Mercedes-Benz CLS diesel with a clean recent MOT record, making it a confident used purchase. The only minor historical advisories were resolved and have not recurred, so caution is minimal provided the service history checks out.
Given the clean MOT run, prioritise verifying the full Mercedes-Benz main dealer or specialist service history to confirm the 2.9-litre diesel engine has been serviced on schedule, including AdBlue and fuel filter intervals. The 2024 advisory for near-side front lower suspension arm ball joint play should be confirmed as rectified, though the 2025 and 2026 passes with no defects suggest it was addressed. Use the low advisory count as leverage to confirm a recent tyre replacement and negotiate only if service gaps are found rather than on condition grounds.
The 2,925cc diesel engine typically returns strong fuel economy for a large coupé, though exact figures are not in the provided data; expect premium diesel running costs consistent with a luxury Mercedes. Road tax for a 2018 diesel of this size will be in a higher band, and insurance group will reflect the CLS's premium positioning. Typical annual maintenance for a Mercedes-Benz CLS diesel of this age includes servicing and potential suspension wear items, with estimated annual running cost in the region of £1,400-£1,800 including fuel, tax, insurance, and routine care.
Inspect the front suspension closely, referencing the 2024 MOT advisory for near-side front lower suspension arm ball joint slight play; confirm there is no residual movement and that the off-side front tyre noted with a nail in 2024 has been replaced. Check all four tyres for even wear and correct specification, as the 2024 nail indicates previous puncture risk on the front axle. Verify the bodywork on this silver example for parking marks and the diesel emissions system (AdBlue) functions without warning lights, given no related defects appear in the MOT data.
The silver 2018 CLS (registration KT18JJF) has covered 55,061 miles as of its February 2026 MOT, averaging roughly 7,800 miles per year since first registration in June 2018. Its MOT history shows five consecutive passes with only minor advisories in 2024 (slight play in near-side front lower suspension arm ball joint and a nail in the off-side front tyre), both cleared by the following year. No aggregate model reliability data is available, but the individual history for this example is reassuringly consistent.
No aggregate MOT reliability data is available for the Mercedes-Benz CLS, so this assessment relies solely on the individual vehicle's recorded history.
Reviewed by the IsItAGoodCar editorial team — Verified automotive analysis synthesized from official vehicle registries.
Data Sources
DVSA
Official MOT test logs & failure reasons
DVLA
Tax, registration & powertrain specs
Experian
Finance, stolen markers & total loss
AI Analysis
Historical fault & advisory patterns
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