Off the subject, but a wickedly delightful and ironic name you have chosen for yourself, AYRTON SENNA, but driving the SLOOOOWest Mercedes of its time, the 240D.

Ayrton Senna, the legendary Brazilian race driver, campaigned one of the early 190E 2.3 16 v sedans, and drove an SEC coupe at one time.

It was a tragedy this great driver died so young.

As to your car, the 240D is a "forever" Mercedes if you can keep it up and keep any rust off the car. Its lack of speed will require different driving techniques to cope, but once at 70-75 mph it can and will cruise very well.

They embody each and every virtue of the most expensive Mercedes, and are very safe, durable and truly long lasting. If I had a backup Mercedes it would be a 240 Diesel manual shift, or a 300D automatic, that's for sure.
I especially like the ones from 1977-85 (The W123)

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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)