Touching on some of what has been said so far in the thread
I bought my Twingo Dynamique S TCE in August last year. It is an ex demonstrator & had all the extras fitted - electric roof, climate control, auto lights/ wipers, Sat Nav & Reversing Camera, Heated Seats - & I thought I had really won a watch.
In November started to get the toxic fuel warning light & the car became very jittery when driving. Dealer replaced one of the exhaust sensors and I got the car back. Couple of weeks later same thing again & dealer replaced the other sensor on the exhaust. Car still felt a bit funny to drive at times but in the main was OK.
In December just before Christmas the orange spanner light came on when I was driving and the power seemed to half. I pulled over & phoned the dealer. They asked me to restart the car & if the car was driveable I could bring it in to them for a check & if not call Renault Assistance out, or carry on driving it if it felt ok. I started the car again & the orange light had gone so I continued using the car as normal for a couple of days. As the car was booked in for a service on 30/12 I thought any niggles would be ironed out then.
Come 29th December & the orange light came on again along with the red STOP light. I phoned Renault Assistance and the RAC guy came out & said that the spanner light/ red STOP seemed to be triggered by the air con kicking in. RAC guys laptop diagnostic check highlighted other issues 1 of which was engine speed sensor issue. After testing it with air con on/ off RAC guy asked me to drive to the dealers (1 mile) with the air con off. I did this & made it to the dealers & left it there with them for repair. RAC guy arranged for courtesy car through Enterprise. I got a phone call next day from the dealer advising problem fixed/ service completed & to come & collect car. Dealer advised fault caused by "debris" on a part of the engine (can't remember what part they said). Left the hire car at the dealer for Enterprise to collect and drove home.
I got Renault Customer Services involved at this stage (registered a complaint).
Next day 30th out in the Twingo & orange spanner/ red STOP came on. Called dealer & they asked me to drive to garage again if I could. Switched air con off & made it to the garage ok & phoned Renault Assistance to arrange another courtesy car & was told no courtesy car as I had made it to the garage myself ! Garage advised me I could leave it with them or I could go out & try & replicate the fault & then phone Renault Assistance again so that I could get a courtesy car (which I needed). Managed to replicate the fault (air con off), phoned RAC, drove to garage with them again & got second hire car.
On 5th January dealer contacted me to advise that fault was with main computer/ ecu & that a new part would have to be ordered from France. Part would arrive at garage on 10th January, would be fitted & then car thoroughly tested before being given back to me on Thursday 12th. I got a phone call on Thursday 12th to say car was ready to collect.
I was reluctant to take the car back at that point as I was due to fly out from Edinburgh Airport on Saturday 14th for a weeks holiday & didn't want to break down during the 35 mile journey to the airport, in case I missed my flight. Explained this to Renault Customer Services who agreed to extend courtesy car hire to 14th January & for me to drop car off at Edinburgh Airport Enterprise Office. Advised dealer re this & dealer stated they would test the car every day during the week I was away to make sure no issues & that car would be available to collect from them on 22/1.
Returned to UK on 21/1 and drove home from airport in another courtesy car (3rd) arranged by Renault Customer Services/ Enterprise. Went to dealers to collect car next day as arranged to find that car had broken down again the previous Wednesday during testing and that "something was corrupting the computer" and that a full download from the car would be sent to Renault technical for analysis.
Renault technical have advised the dealer that the car requires a software upgrade (which will take two weeks to write & test) & a full check of the wiring behind the dash. I asked why my car needs the upgrade & not every Twingo and wasn't really given an answer (just a lot of waffle). I am quite concerned about this.
Our current courtesy car hire has now been extended to 6/2.
Loved the Twingo when it was running well but as I say - nightmare.