26-10-2016:
Noise reported from AWD system of 40,000 mile 2014 GLA on 19-inch wheels from purchase used at 5 months old. Since purchased it suffered from a noise and vibration coming from the 4x4 system at low speeds and now under hard acceleration. After being run consistently on a motorway when stopping and then pulling away again it feels as though the front and rear wheels are fighting against each other. When braking to a stop and when the stop/start system cuts the engine you can actually 'feel' the transmission 'relax'. This seems much worse after a long, high speed run on the motorway. It has got to the point where every passenger comments on either the sound or vibration, regular passengers saying that it's definitely getting worse. Car is on the original rear tyres (at 40,000 miles), front ones replaced earlier 2016 year due to 'odd' wear due to under inflation (not registered by the pressure monitors). Problem probably caused by disparity between front and rear tyres.
10-04-2017:
Report of front left side suspension of new 2017 Mercedes Benz GLA 220d 4matic collapsing.
07-08-2017:
Report of front tyres of 2015 Mercedes Benz GLA 'crabbing' on low speed corners.
23-08-2017:
Report of engine management light on and restricted power within 3 months of purchase of new Mercedes-Benz GLA 220d. Earliest Mercedes would book owner in was 3 months later. Turned out the problem was a soot blocked DPF. Since then owner has taken it back at least 4 times with a blocked DPF. He uses the motorway every day for work commuting and doesn't do city driving.
29-10-2017:
Faults with a June 2016 Mercedes GLA 250 YC16YXG have included: June 2016: Front offside proximity sensor continually activated when there was no obstruction in sight. Owner had to take it in to the garage three times before it was rectified: "It probably needs a software download." This was done but the fault recurred. "We’ll adjust the [something]." This was done but the fault recurred. "We may need to replace the sensor. This finally solved the problem at the cost of four days without the car. (The fault has recurred a few times since but owner ignored it in the hope it will just go away.) January 2017: The stop/start stopped working. Required two visits to dealer. First time "We have found the fault and have replaced the subsidiary battery." 2nd time: "The fault recurred so we have replaced the main battery." Also a fault with the audio system. If owner left iPod plugged in, when he switched on Media, the system showed the current track as playing but without sound. He had to switch to Radio and then back to Media when the system played the sound. He was told “this is a characteristic of the model” so nothing could be done. June 2017: The fault with stop/start recurred. Dealer said: “We have found an electrical fault on the main battery so will replace it. Unfortunately, we don’t have one in stock so can you bring the car back in.” Next day owner took car back and battery was replaced. Owner mentioned media fault to service assistant and she said that perhaps a download of the command module software would cure the fault. The battery was replaced and the download cured the fault. August 2017: Two further faults developed: The hatchback auto close partially stopped working – it would three-quarters close and then stop; The auto parking brake release stopped working so every time owner tried to drive off the panel told him to “release parking brake”. He took car to dealer and both problems were fixed, apparently with a software download (the software download also seems to have fixed the engine stop/start that had begun to malfunction again). However, the mechanic noted a repair advisory from Mercedes which required the battery to be replaced with a different model. This meant that, in 15 months, the car has had five batteries: The original two batteries fitted on delivery; a replacement of the subsidiary battery (January 2017); a replacement of the main battery (January 2017); a replacement of the main battery (June 2017); a replacement of the main battery [different model] (August 2017). September 2017: Front offside proximity sensor again started activating when there was no obstruction in sight. The garage collected the car but could find no fault either from the computer diagnosis or from a walk-around test. However, they had ordered a new sensor plus new wiring as a precaution so replaced the wiring. A day later the fault recurred. October 2107: Front offside proximity sensor again activated unnecessarily. Owner then read that a recall was planned for Mercedes GLA models because of an electrical fault that can cause the airbags to activate by mistake; the garage have not yet contacted the owner about this. (Recall issued 17-10-2017; see 'Recalls'.)
27-01-2018:
Complaint of "tacker, tacker, tacker" noise on slow, hard, right turn going up an incline from stop (Dormans Station Road onto Wilderwick Road near East Grinstead) from Mercedes-Benz GLA 250 4Matic. BApparently US forums say known problem with CV joints TRB LI33.30-P-061504? Started at about 22,000 miles on 15 plate car. Crabbing started at about same time. Tyres 4mm.
27-02-2018:
Report of repeated corrosion of the centres of the front alloy wheels on a March 2016 Mercedes-Benz GLA, now at 13,500 miles. The wheels were first replaced in August 2017 and now, 6 months and 3,000 miles later the corrosion is spreading, like a spider's web, from the centres of the wheels. MB has once again agreed to replace the two front wheels. Apparently the rear wheels had been refurbed prior to the owner buying it as a new car.
19-03-2018:
Report of 2015 Mercedes-Benz GLA200 CDi 7G-DCT Auto Start/Stop losing Drive 3 miles after setting off. No warning signs on instrument panel. Owner pulled over, waited 2 - 3 minutes, then tried again and Drive returned.
27-04-2018:
Report of red fault message appearing on dash of Mercedes-Benz GLA45 AMG - Collision Prevention System Unavailable. "From 50mph the car lost all power within two to three seconds and came to a halt. Owner switched off the ignition, re-started the engine, fault message disappeared engine power regained. MB could find no trace of the GLA45 fault on their diagnostic system and basically said what happened to the GLA 45 could have been the result of a number of issues and not traceable. MB subsequently absolved themselves of any responsibility to research the issue further. The reason being they cannot find a fault or determine why the fault would occur in the first place. If I want to pursue the matter further they have advised me to through the Motor Ombudsman."
29-05-2018:
Report of same Mercedes-Benz GLA45 AMG as 27-4-2018 needing new brake discs at 16,000 miles at a cost of £2,000 because the discs had become warped.
16-10-2018:
Report of failure of inlet manifold swirl flap motors on 2014 Mercedes Benz GLA 200CDI at 46,000 miles. (Damage code 0 09338H2). Estimated cost of repair £1312.32.
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.
03-04-2019:
Report of dual mass flywheel of 2015 Mercedes Benz GLA 220CDI failing to engage the starter motor after 23,000 miles. Mercedes-Benz delaer quoted £3,000 to replace DMF and clutch.
10-04-2019:
Another report of the dual mass flywheel of a Mercedes-Benz GLA failing, this tme a 2014 4-Matic with full Mercedes-Benz service history.
08-06-2019:
Report of random fault with 2014 Mercedes Benz GLA220 CDi 7G-DCT 4Matic. Warning shows: PRE SAFE FUNCTIONS LIMITED; DSR and "skid symbol" also comes on. When this happens engine seems to lose full acceleration and will not kick down. DSR and ECO buttons on the dashboard do not operate. If driver stops, switches off, takes out the key, then switches back on again failts disappear. MB dealer wants £180 for basic diagnostics to try to trace the fault.
24-10-2019:
Report of poor performance and increased fuel consumption from Merceded-Benz GLA after NOx emissions upgrade.
09-12-2019:
Report of rear hatch of 2016 Mercedes-Benz GLA opening of its own accord, initially in a car park when it kept opening every time owner got out and subsequently on 3 further occasions; one a similar situation and twice when he just came to it and found the hatch open. Dealer replaced the lock but fault still occurs. Might benefit from a squirt of WD40. But see 29-10-2017.
15-02-2020:
Report of wear on Alcantara type driver's seat material of 39,000 miles 2017 Mercedes Benz GLA 200 AMG Line leading to shiny areas where it seems to have worn away.
09-01-2023:
Report of rainwater leaking into the tailgate of a 2016 (16) Mercedes GLA 200d AMG Line. Mercedes dealer says it's a design fault of this model.
August 2013
Mercedes-Benz GLA revealed
The first Mercedes-Benz in the fast-growing compact SUV segment is highly manoeuvrable around town (length x width x height 4,417 x 1,804 x 1,494 millimetres), lively on country roads and dynamic and efficient on the motorway. The GLA is the first Mercedes-Benz SUV to be optionally available with the new-generation permanent all-wheel drive system 4MATIC, with fully variable torque distribution in the UK.
The rear seat backrests can not only be folded down completely, but are also adjustable for angle if required. The generous luggage compartment (421 – 836 litres) is well-presented and can be loaded without difficulty thanks to the low sill and the wide tailgate, which opens automatically as an option.
The particularly rigid body structure provides a reliable basis for a wide range of applications. Initially the power range of the 1.6 and 2.0-litre petrol engines will extend from 156PS in the GLA 200 to 211PS in the GLA 250.
The GLA 200 CDI develops 136PS and maximum torque of 300Nm and has a displacement of 2.2 litres. It emits only 114g/km CO2. The GLA 220 CDI likewise has a displacement of 2.2 litres and develops 170PS and 350Nm.
The GLA from Mercedes-Benz is optionally available with a new generation of the 4MATIC permanent all-wheel drive system featuring fully variable torque distribution. This all-wheel drive system excels with high traction reserves and outstanding agility combined with superlative driving safety and energy efficiency.
Automatic transmissions are 7G-DCT, twin oil clutch, not dry clutch.
The components of the 4MATIC system include the power take-off to the rear axle that is integrated into the 7G-DCT automatic dual clutch transmission, and the rear-axle gear with integrated, electrohydraulically controlled multi-disc clutch. This set-up allows fully variable distribution of the drive torque between front and rear axles. Additional benefits of this design are a lower system weight than is available from the competition, and high efficiency.
Model |
GLA 200 |
GLA 250/ GLA 250 4MATIC |
GLA 200 CDI |
GLA 220 CDI/ GLA 220 CDI 4MATIC |
Number of cylinders/arrangement |
4 in-line |
4 in-line |
4 in-line |
4 in-line |
Displacement (cc) |
1,595 |
1,991 |
2,143 |
2,143 |
Rated output (PS at rpm) |
156 at 5300 |
211 at 5500 |
136 at 3600-4000 |
170 at 3600-4000 |
Rated torque (Nm at rpm) |
250 at 1250-4000 |
350 at 1200-4000 |
300 at 1400-4000 |
350 at 1600-3200 |
January 2014
GLA 45 AMG revealed
The AMG 2.0-litre turbo engine is the most powerful series-production four-cylinder turbo engine in the world. It produces 360PS and develops a peak torque of 450Nm. The AMG 2.0-litre four-cylinder turbo engine is assembled purely by hand in accordance with the traditional AMG philosophy of "one man, one engine". Apart from serving as an AMG hallmark confirming superlative production quality, the AMG engine badge bearing the engine fitter's signature also attests the peerless DNA of Mercedes-Benz's high-performance brand.
The GLA 45 AMG comes with variable AMG 4MATIC all-wheel drive as standard while fuel economy is 37.6mpg with emissions of 175g/km. In standard specification the GLA 45 AMG runs on five-twin-spoke AMG light-alloy wheels painted titanium grey with high-sheen finish, mounted with tyres of size 235/45 R 19. As an optional extra from the AMG Performance Studio, customers can opt for larger 10-spoke AMG light-alloy wheels with tyres of size 235/40 R 20 – these are available painted titanium grey with high-sheen finish or painted matte black.