AutoRank

MERCEDES-BENZ 300 - Model Report

Reliability, mileage, fuel mix, safety, and defect profile from AutoRank.

Reporting Period: Last 5 years Report Date: Generated today Filters: All years, fuels and engines autorank.co.uk/models/mercedes-benz/300

Time Period & Model

Time period snapshot: Last 5 years

Manufacturer: Mercedes-Benz

Model: 300

Model reliability rank

MOT-based rank from 17,310 selected-period tests.

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Overall MOT pass rate

79.8%

Share of this model's 17,310 selected-period MOT tests that pass.

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Efficiency, emissions & tax

Average MPG

CO2 emission

Euro emissions

Tax cost

£370/yr

Vehicle list price over £40,000?NoYes

Average vehicle miles

115,272

Solid average mileage for this model.

Life expectancy miles

115,575

Moderate mature-fleet mileage expectation.

Average vehicle age

34.1

Older average age in the represented fleet.

Vehicles represented

2,361

2,361 valid MOT, 0 under 3 years.

Tests analysed

17,310

17,310 MOT tests in the selected period.

Rarity ranking

Based on Make & Model

Very Rare

2,361On the road

Insight summary

Mercedes-Benz 300 is a very rare model in this snapshot, with 2,361 represented vehicles and 0.01% of the active UK pool tracked by AutoRank. For the last 5 years, it has a pass rate of 79.8% from 17,310 MOT tests, with a reliability score of 64. The current pool shows an average of 115,272 miles and an average age of 34.1 years, while mature-fleet mileage is estimated at 115,575 miles. Petrol leads the fuel split, followed by diesel, and the most frequent defect themes are suspension joints, exhaust emissions and battery insecure but not likely to fall from carrier. The practical read is that the Mercedes-Benz 300 looks a little better than average, but still rewards careful checks on mileage and maintenance.

Fuel type breakdown (by model)

Fuel	Vehicles
PETROL	1,978
DIESEL	370
ELECTRIC DIESEL	10
HYBRID ELECTRIC (CLEAN)	2
LPG	1

Euro NCAP Safety

No NCAP tests found for this model.

Top 25 most common defects (by model)

Defect	Count
Offside Front Lower Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))	275
Nearside Front Lower Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))	271
Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))	216
Battery insecure but not likely to fall from carrier (4.13 (a) (i))	214
Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))	212
Parking brake efficiency below requirements (1.4.2 (a) (i))	138
Rear fog lamp not working (4.5.1 (a) (ii))	131
Nearside Headlamp aim too low (4.1.2 (a))	129
Nearside Front Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))	122
Offside Headlamp aim too low (4.1.2 (a))	118
Anti-lock braking system warning lamp indicates an ABS fault (1.6 (b))	114
Offside Front Position lamp not working (4.2.1 (a) (ii))	111
Offside Front Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))	106
Offside Rear Position lamp not working (4.2.1 (a) (ii))	106
Nearside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))	103
Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))	99
Rear Brakes imbalanced across an axle Axle 2 (1.2.1 (b) (i))	96
Nearside Front Track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt (2.1.3 (g) (i))	94
Offside Front Track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt (2.1.3 (g) (i))	93
Service brake efficiency below requirements (1.2.2 (a) (i))	88
Nearside Front Position lamp not working (4.2.1 (a) (ii))	83
Windscreen washer not working (3.5 (a))	82
Windscreen washer provides insufficient washer liquid (3.5 (a))	82
Windscreen wiper does not clear the windscreen effectively (3.4 (b) (ii))	79
Nearside Rear Position lamp not working (4.2.1 (a) (ii))	77

All 25 defects ranked by recorded countShowing 3,239 defects across this top 25 set

Offside Front Lower Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))

275

Nearside Front Lower Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))

271

Exhaust emissions carbon monoxide content excessive (8.2.1.2 (b))

216

Battery insecure but not likely to fall from carrier (4.13 (a) (i))

214

Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i))

212

Parking brake efficiency below requirements (1.4.2 (a) (i))

138

Rear fog lamp not working (4.5.1 (a) (ii))

131

Nearside Headlamp aim too low (4.1.2 (a))

129

Nearside Front Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))

122

Offside Headlamp aim too low (4.1.2 (a))

118

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

114

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

111

Offside Front Suspension arm ball joint dust cover severely deteriorated (5.3.4 (b) (i))

106

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

106

Nearside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))

103

Offside Front Lower Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii))

Rear Brakes imbalanced across an axle Axle 2 (1.2.1 (b) (i))

Nearside Front Track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt (2.1.3 (g) (i))

Offside Front Track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt (2.1.3 (g) (i))

Service brake efficiency below requirements (1.2.2 (a) (i))

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

Windscreen washer not working (3.5 (a))

Windscreen washer provides insufficient washer liquid (3.5 (a))

Windscreen wiper does not clear the windscreen effectively (3.4 (b) (ii))

Nearside Rear Position lamp not working (4.2.1 (a) (ii))

Mercedes-Benz 300 reliability and MOT data