| Deutsch | Abb | Englisch |
| Dachgepäckträger | | roof luggage rack |
| Dachlast | | roof rack load |
| Dachverkleidung | | headlining |
| Dachverzierung | | hood ornament |
| Dämmung | | silencer |
| Dämpfer | | absorber; anti-stall; damper |
| Dämpfungselement | | absorber |
| Dampfwagen | | steam car |
| Dashcam | | road angel (umgangssprachlich) |
| Datenbyte | | Data byte (DB) |
| Datenfunksystem; Datenübertragung per Funk | | Radio data system (RDS) |
| Dauer | | endurance |
| Dauerleistung | | endurance |
| dazwischenlegen | | interpose |
| dazwischenstellen | | interpose |
| Deckel | | cap; cover; lid |
| Deckeldichtung | | cover gasket |
| Defekt | | defect; failure; fault |
| dehnbar | | ductile |
| Delle | | dent |
| demontieren | | disassemble; dismantle |
| denaturierter Spiritus | | methylated spirit |
| Destilliertes Wasser | | deionised water |
| Diagnose- und Steuergerät | | Diagnostic and control unit (DCU) |
| Diagnosebuchse | | diagnostic socket |
| Diagnosestecker | | diagnostic connector |
| Diagnostischer Bus (im Sinne von Datenübertragung) | | diagnostic bus (DS2-Bus) |
| diagonal | | transverse |
| dicht | | dense |
| Dichte | | density |
| Dichtfläche | | mating surface |
| Dichtheitsprüfung | | tightness test |
| Dichtnut | | sealing groove |
| Dichtung | | gasket; joint; pressing; seal |
| Dichtungsscheibe | | sealing washer; washer |
| Dichtwulst | | sealant bead |
| dick | | thick |
| Dicke | | thickness |
| Diebstahl-Alarmleuchte | | anti-theft alarm LED (=light emmitting diod) |
| diebstahlsicher | | theftproof |
| Diebstahlsicherung | | anti-theft system |
| Diesel | | diesel |
| Diesel - Kraftstoff | | diesel fuel |
| Dieselmotor | | diesel engine |
| Differential | | differential |
| Differentialgehäuse | | differential case |
| Differntialkreuz | | differential pinion spider |
| Digitale Dieselelektronik | | digital diesel electronic (DDE) |
| Digitaluhr | | digital clock |
| Diode | | diode |
| Diodenträger | | diode assembly |
| direkter Gang | | direct drive |
| Distanzplatte | | distance plate |
| Distanzscheibe | | distance spacer; spacer; shim |
| Distanzstück | | distance piece |
| Doppelgelenk | | double universal joint |
| Doppelringschlüssel | | double-head box wrench |
| Doppelseitiges Selbstklebeband | | double sided self-adhesive tape |
| doppelt gekröpfter Schraubenzieher | | double offset screwdriver |
| Doppelvergaser | | dual carburettor |
| Doppelzündung | | dual ignition |
| Dorn | | mandrel |
| Draht | | wire |
| Draht - Sicherungsring | | wire retaining ring |
| Drahtbürste | | wire brush |
| Drahtstärke | | wire gauge |
| Drehbank | | lathe |
| drehen | | turn |
| drehend | | rotary |
| Drehgelenk | | swivel |
| Drehgriff | | twist grip |
| Drehkoppler | | rotary coupler |
| Drehmoment | | torque |
| Drehmomentschlüssel | | torque wrench |
| Drehmomentschlüssel einstellen | | torque wrench settig |
| Drehmomentwandler | | torque converter |
| Drehpunkt | | centre of rotation; fixed pivot; fulcrum |
| Drehschemel | | centre pivot |
| Drehschieber | | rotary valve |
| Drehstab | | torsion bar |
| Drehstift | | cross bar |
| Drehzahl | | number of revolutions |
| Drehzahlbegrenzer | | speed limiter |
| Drehzahlgeber | | rotary speed sensor |
| Drehzahlmesser | | tachometer; revolution counter; rev counter |
| Drehzapfen | | swivel |
| dreiarmiger Abzieher | | three-legged hub and bearing puller |
| Dreiecksverbindung | | delta connection |
| Dreipunkt - Automatik - Gurt | | inertia reel belt |
| Dreiradfahrzeug | | threewheeler |
| Drossel | | throttle |
| Drosselhebel | | throttle arm |
| Drosselklappe | | butterfly valve; throttle valve |
| Drosselklappendämpfer | | anti-stall |
| Drosselkondensator | | suppressor |
| Drosselschieber | | throttle valve |
| Druck | | pressure; thrust |
| Druck(umlauf)schmierung | | forced lubrication |
| Druckbegrenzungsventil | | pressure limiting valve |
| drücken | | depress |
| Druckfeder | | pressure spring |
| Druckknopf | | button |
| Drucklager | | thrust bearing |
| Druckleitung | | delivery line; delivery pipe; pressure line |
| Druckminderungsventil | | pressure reducing valve |
| Druckplatte | | pressure plate; thrust plate |
| Druckprobe | | pressure test |
| Druckprüfung | | pressure test |
| Druckreduzierventil; druckgesteuertes Reduzierventil | | pressure conscious reducing valve (PCRV) |
| Druckregelventil | | pressure regulating valve |
| Druckschalter | | pressure switch |
| Druckscheibe | | thrust washer |
| Druckschmierung | | force feed; feed |
| Druckstange | | pushrod |
| Druckumlaufschmierung | | pressure lubrication |
| Druckventil | | delivery valve |
| Druckverlust | | pressure loss |
| Druckverlustprüfer | | pressure loss tester |
| dunstig | | damp |
| durchbohren | | pierce |
| durchdringen | | penetrate; pierce |
| Durchführung | | through-hole |
| Durchlaß | | through-hole |
| Durchsteckschraube | | through-bolt |
| durchtränken | | soak |
| Durchtreiber | | drift punch |
| Düse | | jet; nozzle |
| Düsennadel | | jet needle |
| Düsenstock | | jet block; nozzle holder |