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AO56 ACU

2007 Mercedes-benz Cls

Black Diesel 2987cc
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MOT Status

Expired
Expires6 Jul 2026
Tests18 (12 pass, 6 fail)
Pass rate66.7%

Mileage

240,261 mi
Last recorded240,261 miles
Recorded on7 Jul 2025
Typical for 2007 Mercedes-benz Cls83,092 mi

Significantly above average — investigate

4 checks still locked for this Mercedes-benz
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Vehicle Details

RegistrationAO56 ACU
MakeMercedes-benz
ModelCls
Year2007
ColourBlack
Fuel typeDiesel
Engine2,987cc

All premium checks include

50+ data points
Finance Check (Experian) Insurance Write-off Salvage Auction Stolen Check Previous Owners Ex-Taxi, Police, NHS Mileage Anomaly Import / Export Scrapped Check Plate Changes

MOT History

12 pass 6 fail
Pass 7 Jul 2025 240,261 miles

Nearside Front Inner Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Offside Front Inner Tyre worn close to legal limit/worn on edge (5.2.3 (e))

engine covers under trays fitted

Pass 3 Jul 2024 234,623 miles

Covers fitted masking some testable items

Nearside Front Headlamp has a product on the lens but not seriously reducing light output (4.1.4 (b))

Offside Front Headlamp has a product on the lens but not seriously reducing light output (4.1.4 (b))

Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Fail 25 Jun 2024 234,585 miles

Electronic stability control warning lamp indicates a fault (7.12 (e))

Nearside Rear Tyre has a lump, caused by separation or partial failure of its structure Outer side wall (5.2.3 (d) (ii)) DANGEROUS

Offside Front Road wheel fractured (5.2.2 (a)) DANGEROUS

Covers fitted masking some testable items

Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Nearside Front Headlamp has a product on the lens but not seriously reducing light output (4.1.4 (b))

Offside Front Headlamp has a product on the lens but not seriously reducing light output (4.1.4 (b))

Offside Front Tyre worn close to legal limit/worn on edge Worn on inner edge only (5.2.3 (e))

Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))

Pass 8 Mar 2023 229,525 miles

Nearside Front Lower Suspension arm ball joint has slight play (5.3.4 (a) (i))

Offside Front Lower Suspension arm ball joint has slight play (5.3.4 (a) (i))

engine covers under trays fitted

Pass 8 Mar 2022 222,877 miles

Nearside Rear Tyre worn close to legal limit/worn on edge 2mm (5.2.3 (e))

Offside Rear Tyre worn close to legal limit/worn on edge 2mm (5.2.3 (e))

engine covers under trays fitted

Pass 9 Mar 2021 215,739 miles

Offside Front Lower Shock absorbers has a slightly worn bush (5.3.2 (c))

Offside Rear Tyre worn close to legal limit/worn on edge on approx 3 mm (5.2.3 (e))

undertrays/sill covers fitted not allowing full inspection

Fail 9 Mar 2021 215,739 miles

Nearside Front Tyre not fitted in accordance with side wall instructions (5.2.3 (i))

Offside Front Lower Shock absorbers has a slightly worn bush (5.3.2 (c))

Offside Front Tyre not fitted in accordance with side wall instructions (5.2.3 (i))

Offside Rear Tyre worn close to legal limit/worn on edge on approx 3 mm (5.2.3 (e))

Steering rack has excessive free play detected at the steering wheel (steering rack fitted) both track rod end lock nuts loose (2.3 (a) (i))

undertrays/sill covers fitted not allowing full inspection

Fail 4 Dec 2020 215,737 miles

Exhaust emissions exceed manufacturer's specified limit (8.2.2.2 (a))

Exhaust emissions test not completed because smoke levels are significantly in excess of the specified limit values (8.2.2.2 (f))

Front Brakes imbalanced across an axle (1.2.1 (b) (i))

Front Brakes imbalanced across an axle Axle 1 (1.2.1 (b) (i))

Offside Front Outer Tyre has a cut in excess of the requirements deep enough to reach the ply or cords sidewall (5.2.3 (d) (i))

Offside Front Service brake lagging in operation (1.2.1 (d))

Supplementary restraint system warning lamp indicates a fault (7.1.6 (a))

Nearside Front Tyre has ply or cords exposed (5.2.3 (d) (ii)) DANGEROUS

Covers and under-trays obscuring view

Offside Front Inner Tyre slightly damaged/cracking or perishing shoulder (5.2.3 (d) (ii))

Offside Front Lower Shock absorbers has a slightly worn bush (5.3.2 (c))

Pass 16 Sep 2019 211,487 miles

Nearside Front Tyre worn close to legal limit/worn on edge Worn on inner edge (5.2.3 (e))

Offside Front Tyre worn close to legal limit/worn on edge Worn on inner edge (5.2.3 (e))

Fail 9 Aug 2019 211,482 miles

Anti-lock braking system warning lamp indicates an ABS fault (1.6 (b))

Exhaust on a vehicle fitted with a diesel particulate filter emits visible smoke of any colour (8.2.2.2 (d))

Front Service brake excessively fluctuating (1.2.1 (e))

Nearside Rear Brake pipe excessively corroded (1.1.11 (c))

Offside Front Position lamp not working (4.2.1 (a) (ii))

Offside Rear Service brake excessively fluctuating (1.2.1 (e))

Offside Rear Brake pipe at imminent risk of failure or fracture (1.1.11 (a)) DANGEROUS

Exhaust mounting defective (6.1.2 (a))

Front Brake disc worn, pitted or scored, but not seriously weakened Both front discs (1.1.14 (a) (ii))

Nearside Front Tyre worn close to legal limit/worn on edge Worn on inner edge (5.2.3 (e))

Offside Front Tyre worn close to legal limit/worn on edge Worn on inner edge (5.2.3 (e))

Rear Brake disc worn, pitted or scored, but not seriously weakened Both rear discs (1.1.14 (a) (ii))

Pass 17 Aug 2016 187,359 miles

Rear Brake hose slightly deteriorated both (3.6.B.4d)

Rear Tyre worn close to the legal limit both (4.1.E.1)

slight oil leak

Fail 18 Feb 2016 179,991 miles

Nearside Front Tyre has ply or cords exposed (4.1.D.1b)

Offside Front Tyre has ply or cords exposed (4.1.D.1b)

Pass 28 Apr 2015 163,237 miles
Fail 27 Apr 2015 163,237 miles

Front Windscreen wiper does not clear the windscreen effectively (8.2.2)

Nearside Front Track rod end ball joint has excessive play (2.2.B.1f)

Nearside Front Tyre has a cut in excess of the requirements deep enough to reach the ply or cords (4.1.D.1a)

Offside Rear Registration plate lamp not working (1.1.C.1d)

Nearside Front Headlamp aim too high (1.8)

Offside Front Headlamp aim too high (1.8)

Pass 6 Feb 2014 133,745 miles

Nearside Rear Tyre worn close to the legal limit (4.1.E.1)

Under-trays fitted obscuring some underside components

exhaust rear boxes cracked and offside bracket broken - system still just supported

offside front tyre fouling on inner wing liner

Pass 21 Dec 2012 103,217 miles

Nearside Front Suspension arm has slight play in a ball joint (2.4.G.2)

Offside Track rod end ball joint has slight play (2.2.B.1f)

Pass 4 Jan 2012 77,763 miles

Nearside Rear Exhaust has a minor leak of exhaust gases (7.1.2)

Offside Rear Exhaust has a minor leak of exhaust gases (7.1.2)

Under-trays fitted obscuring some underside components

Pass 5 Jan 2010 34,134 miles

How Reliable is the Mercedes-benz Cls?

Based on 421,126 MOT tests across 35,498 vehicles.

79.8%
Pass Rate
6,663
Miles/Year
21
Year Lifespan
35,498
On UK Roads

Top MOT Failure Points

Tyre tread depth below requirements of 1.6mm 8,450
Tyre has ply or cords exposed 6,682
Tyre has a cut in excess of the requirements deep enough to reach the ply or cords 2,819
Suspension arm has excessive play in a ball joint 2,595
suspension has excessive play in a lower suspension ball joint 2,284
Full Mercedes-benz Cls reliability report

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AO56 ACU is a 2007 Mercedes-benz Cls in Black with a 2,987cc diesel engine. This vehicle has been through 18 MOT tests with a personal pass rate of 66.7%.

Across all 2007 Mercedes-benz Cls models, the average MOT pass rate is 77.3% with a typical mileage of 83,092 miles. This particular vehicle has a lower pass rate than the average for its year, which may indicate maintenance issues worth investigating.

The most common reason a Mercedes-benz Cls fails its MOT is tyre tread depth below requirements of 1.6mm, accounting for 8,450 recorded failures. If you're considering buying AO56 ACU, it's worth having these areas checked by a mechanic before committing.

The Mercedes-benz Cls typically stays on UK roads for around 21 years. At 19 years old, this Mercedes-benz Cls is approaching the upper end of the typical lifespan for this model.

Frequently Asked Questions

How do I check the history of AO56 ACU?

You can check the full history of AO56 ACU by running a full vehicle check. This shows you finance, stolen, write-off, MOT history, mileage records and more.

What year was AO56 ACU registered?

AO56 ACU is a 2007 Mercedes-benz Cls, first registered on 16 January 2007.

Is AO56 ACU safe to buy?

The MOT history for AO56 ACU shows 18 tests with a 66.7% pass rate. To check for outstanding finance, stolen markers, write-off history and mileage discrepancies, run a full vehicle check.

Does AO56 ACU have outstanding finance?

Finance checks require a premium vehicle report. This checks against all major UK finance providers to see if there is any outstanding finance on AO56 ACU. If you buy a car with outstanding finance, the finance company can repossess it.

No warranty or guarantee of accuracy is provided for any free data on this page. The data guarantee applies only to information obtained through the purchase of a full check.