Mercedes-Benz A-Class (2012–2018)

What's good

Five Star Euro NCAP rating: 93% adult protection, 81% child protection, 67% pedestrian protection and 86% for safety assist.

What to watch out for

4-10-2013: Complaint of numerous rattles in a new A 250 AMG which the Mercedes dealer was unable to fix.

9-1-2014: First complaint of problem with dual clutch transmission in a May 2013 A200. Started showing fault with reverse gear and also tends to jolt forward or backwards especially when cold from starting position. Dealer unsure what to do and does not yet have correct tools to repair it.

6-3-2017: Report that a new Mercedes-Benz 180d was delivered with an FM only radio that continually loses signal. Owner told that an upgrade to a DAB not fitted as standard and costing £450 would cure it.

9-4-2017: Report that sodden footwells in Mercedes-Benz A-Class are caused by the one-way rear cabin vent flaps failing. These are located between the load area sides and the rear bumper extensions and if the flaps fail water is splashed by the back wheels of the car into the load area from which it flows forwards into the footwells.

1-9-2017: Report of turbo of 2013 Mercedes Benz A 180 failing at 10,000 miles, then the replacement turbo failing at 20,000 miles. Because by then the car was out of warranty, neither the supplying dealer, nor Mercedes Benz would pay for the 2nd replacement turbo.

2-1-2018: Significant problems reported with Mercedes-Benz A 220 CDI AMG Sport, bought on a PCP at 5 months old in November 2015 from a Mercedes dealer at 2500 miles. Engine management light came on in May 2017, car went into limp mode, could not be fixed at the roadside and went into the dealer for 11 weeks. Mercedes 'mechanics' were unable to fix the fault and were seeking specialist help from Germany. They told owner that the engine control unit kept faulting. After he complained to customer services he was told the car had been fixed and car was given back. After a week it had happened again and the engine management light came on and went into limp mode. The car went back into the dealer and it remained there for a further two weeks whilst the ECU was replaced. Owner had car back for 10 weeks then the same thing happened again. He has only manages to drive it 1500 miles in that time. Car now at 21,500 miles.

6-2-2018: Further report of flooded spare wheel well of Mercedes A-Class.

16-2-2018: Report of starting problems with 2013/63 Mercedes-Benz A220 AMG at 140,000 miles. Local independent replaced a part and billed a total of £700, but no better. Now thought to need a fresh set of injectors.

21-6-2018: Report of 4Matic system of 2015 Mercedes-Benz A250 4Matic showing '4matic unavailable' warning sign came up and car would not start. Once left for a while it starts and drives but the warning sign stays lit and then sometimes extinguishes. Local Mercedes dealer does not have the part and claims there are none available worldwide. MB Head Office Customer Service Desk confirmed this. They have no ETA for the part and claim others are waiting likewise and for other Mercedes essential parts too e.g. exhausts.

29-10-2018: Report of fuel system problems with 2016 Mercededs-Benz GLA 250 (petrol) AMG line at 20k miles after running 400km at 130kmp on French Autoroutes using 95RON petrol and then refuelling with 95RON. On pulling away from the pump, the car has a noticeable misfire for at least a couple of kilometres. On every occasion this has happened, it has been preceded by the auto stop-start failing, in that the yellow ‘not ready’ light will have been on for the whole 400 km (when the light is green, ‘ready’, there has never been a problem. The first time it happened (July 2017) the engine was unable to pull below 2500 rpm, and would not rev above 4000 rpm. Using the auto-box manually, owner managed to limp to Mercedes Le Mans where the engine diagnostics revealed a non-working No 1 cylinder. They reinstalled the full software suite, and the catastrophic misfire was resolved. However, three times since owner has experienced varying degrees of stuttering after the 400 km refuel point. We suggested running the car on 99RON petrol that the engine is optimised for.

13-8-2019: Report of clearcoat lacquer over "Juniper red" paint of 2012 Mercedes-Benz A200 AMG Sport starting to fail. Other reports of the lacquer over "red" paint and "Fire Opal Red" paint failing on C-Class here /carbycar/mercedes-benz/c-class-w204-2007/good/ and here /carbycar/mercedes-benz/c-class-coupe-2011/good/

20-11-2019: Report of water ingress to load area and rear footwell of 2013/63 Mercedes-Benz A-Class. Owner has found reports of this being caused by water ingress through the seals for the rear cabin vent flaps that are situated between the rear load area sides and the bumper valence. (See: 6-2-2018 and 9-4-2017).

26-11-2019: Report of failure of stop/start battery in 2016 Mercedes-Benz B-Class B200d 7G-DCT Auto despite 28,000 miles in 3 years. Battery likely to be a Bosch AGM Stop Start Battery S5A15, costing around £230.

20-12-2019: Further report of leak into load area and rear footwell of 2013/62 reg Mercedes-Benz A-Class AMG Sport, most likely to be through broken or rodent damaged cabin air pressure equalistation flaps that are situated between the lower load area sides and the bumper valence extensions. Owner charged a £110 "diagnostic fee" for the dealer to take a look. Not happy to pay the estimated £1,534 for repair. 9-1-2020: Reader confirmed diagnosis of 20-12-2019 (above) that water is entering the interior through the sealing of the vent flap in the rear end centre section. The fix is to remove the bumper and the flaps and clean the body flange on the outside and carry out work on the vent flap. They have reduced the cost of repairs to 50% so now a figure of £790. They indicate that it is not a known or recognised fault with their vehicles.


Mercedes-Benz A-Class built 08/09/2014-07/11/2014. Number of cars involved 1208. Manufacturer reference SRPC1507. Problem Front passenger airbag may not deploy because of ill-fitted fuses.

20-06-2017: R/2017/096: STARTING CURRENT LIMITER MAY OVERLOAD. Where the car incurs severe engine damage resulting in the engine failing to turn over (engine seizure), and if the driver repeatedly attempts to start the engine despite the engine not cranking, the very high electrical current could lead to overheating of the starting current limiter and the potential for a fire. Fix: Recall the vehicles that are likely to be affected and install an additional fuse in the electrical line to the starter. Build dates: 01-02-2014 to 28-02-2017.

20-06-2017: R/2017/179: VACUUM LINE BRAKE BOOSTER MAY BREAK. The connection fitting of the vacuum line to the brake booster is not to specification and my not be durable. If the connection fails the brake booster will no longer be supplied with vacuum. After a few brake applications, the driver will have to apply additional pressure to the brake pedal to gain the appropriate braking effect. Fix: Recall the vehicles that are likely to be affected and replace the vacuum line on the brake booster with a quality assured component. VINS: WDD1173031N011248 to WDD2462432J170572; WDD1173031N011248 to WDD2462432J170572; WDD1173031N011248 to WDD2462432J170572; WDD1173031N011248 to WDD2462432J170572. Build dates: 01-04-2011 to 30-04-2013.

20-06-2017: R/2017/177: AIRBAG MAY NOT DEPLOY CORRECTLY. The propellant mixing ratio in the igniters of the front passenger airbag assembly may not meet specification. If the airbag is required and activated, it might not deploy or not completely deploy. This could increase the risk of injury to the occupants. Fix: Recall the vehicles that are likely to be affected and replace the front passenger airbag assembly. VINS: WDC1569022J306707 to WDD2462432J426041; WDC1569022J306707 to WDD2462432J426041; WDC1569022J306707 to WDD2462432J426041; WDC1569022J306707 to WDD2462432J426041; WDC1569022J306707 to WDD2462432J426041. Build dates: 01-08-2016 to 31-03-2017.

23-7-2017: MB issued a voluntary recall to apply software upgrades to diesel engines in a bid to cut nitrogen oxide emissions on three million vehicles. All Euro 5 and Euro 6 standard diesel engines registered in Europe between January 2011 and September 2015 are affected. (Only the new two-litre turbodiesel fitted to the latest E-Class saloon and a new V6 turbodiesel in the soon-to-be released S-Class are exempt.) A Mercedes-Benz spokesman said that the “software upgrade” would be carried out by dealerships when customers visited for a service or other maintenance work and would take around an hour to complete. MB “did not expect” the upgrade to have any effect on the performance of Mercedes-Benz vehicles. Many Mercedes-Benz diesel vehicles have already had the update applied after work to apply the changes to compact vehicles and the V-Class MPV got underway in March. It was reported in The Times in July that while Daimler, which manufactures Mercedes-Benz, had not been found to use the same type of software for cheating emissions tests discovered in Volkswagen vehicles in 2015, it is the subject of an investigation by the German authorities into the possible manipulation of exhaust controls in cars with diesel engines.

17-10-2017: Mercedes-Benz issued a voluntary recall to apply a free-of-charge fix to approximately 400,000 UK models affected by a broken steering column spring. Coupled with insufficiently earthed wiring components, this may lead to a short circuit - which can inadvertently deploy the driver's airbag. I f the airbag warning light appears on the dash customers are urged to contact a roadside assistance service or their nearest retailer. The safety recall affects certain A-Class, B-Class, C-Class and E-Class models, together with CLA, GLA and GLC vehicles, built between November 2011 and July 2017.

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