Date: 201811
Location: MMMX.Airport, FO
Aircraft: A320
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Final Approach
ATC / advisory: TRACON MMMX
Reporter organization: Air Carrier
Reporter function: Pilot Not Flying; Captain
Reporter qualification: Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Human factors: Confusion; Communication Breakdown
Second reporter function: Pilot Flying; First Officer
Anomaly: ATC Issue All Types; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Other / Unknown
Detector: Automation Air Traffic Control; Person Flight Crew
When detected: In-flight
Result: Flight Crew Requested ATC Assistance / Clarification
Contributing factors: Chart Or Publication; Environment - Non Weather Related; Procedure
Primary problem: Ambiguous

Narrative: Crossing MAVEK on ILS 2 5R; [we were] asked what our speed was and I replied 160 knots.  We had not been assigned a speed to MAVEK; and had been cleared for the approach; so we slowed to 160 [knots].  Controller said it was charted to maintain 200 knots to MAVEK; and THEN slow to 160 knots.  We acknowledged him and complied with his speed assignment of 180 until advised.  When I got the chance; I looked everywhere I could to find a charted speed of 200 it's to MAVEK; but still cannot find it.


Second narrative: After being vectored off the AVSAR1C arrival into Mexico City; we were eventually given direct to SLM and a descent to 12;000 [feet] at 220 knots assigned. I was the Pilot Flying and noticed a white and green light out of my peripheral vision passing 14;000 feet and confirmed a laser at 3 o'clock and about 3 miles away. I informed the Captain of the event; he concurred; and I shielded my vision from the laser. After reaching 12;000 feet Mexico City; Approach Control cleared us for the ILS DME 2 5R approach. I verbally verified with the Captain that we were cleared for the approach and verbalized I would slow to 160 knots; he agreed. We began to slow and I configured the aircraft with flaps 1 and Flaps 2; the intent was to get configured for the remaining portion of the arrival and avoid being high and fast. Prior to reaching MAVEK waypoint; the Approach Controller asked us our speed and we replied 160 knots. The controller informed us that was incorrect and that 'published' speed was 200 knots. We informed him that he had cleared us for the Approach and no speed restrictions were assigned with the clearance. The controller persisted that 200 knots was the correct speed prior to MAVEK; he then assigned 180 knots. The controller then communicated in Spanish; I think to the traffic following us to gain separation. We accelerated to 180 knots; and began a descent to 9;700 feet; the descent was late due to the discussion with the controller. I called for the landing gear to help the descent and the controller then assigned 160 knots. After getting slowed back down by ATC; we configured the aircraft; complied with the rest of the approach; and landed without incident.During the post flight debrief we were unable to find where the controller was referencing the 200 knot published speed restriction prior to crossing MAVEK. We were not sure it is published; but if ATC expects that speed crews operating into Mexico City need to know about it.


Synopsis: A320 flight crew reported ATC advised they had slowed below a published speed descending into MMMX airport.  They were unable to locate the published speeds on the approach charts. First Officer also reported being struck with laser from the ground.